text stringlengths 226 34.5k |
|---|
How to load a MATLAB file which has 2 arrays, in 1 code of line
Question: I have 1 file with 2 arrays inside it (x and y). This is the dictionary keys:
dict_keys(['__version__', 'x', '__header__', 'y', '__globals__'])
These are the instructions I write to call my arrays without the dict_keys:
... |
When I write to a text file in python 3.5.1 the text file is blank
Question: I'm writing to a text file but the final content is blank. Can anyone help.
def main():
types = input('What is the device type? Phone or Tablet')
save = open('type.txt', 'w')
save.write(types)
sav... |
Coinbase Wallet API python Authentication Error, Invalid Signature
Question: Python 3.4 Coinbase Wallet API V2
* * *
I have been stuck for some time trying to figure out while this buy call (and
other api calls like get_payment_methods() and get_accounts() ) run into
authentication errors. I have successfully been ab... |
Remove backslash with str.translate
Question: I wrote the following Python2.7 code to remove digits and the backslash
character (\\) from some string. I attempted to use the str.translate method,
because I had learned that it is very efficient. The code below successfully
removed digits from the string x, but is unable... |
Spyder crashes at start: UnicodeDecodeError
Question: During a Spyder session my Linux froze. After startup, I could not start
Spyder; I got the following error instead:
(trusty)dreamer@localhost:~$ spyder
Traceback (most recent call last):
File "/home/dreamer/anaconda2/bin/spyder", line 2, in ... |
Why does print() print an empty tuple instead of a newline?
Question: **The error was caused by a typo. Please flag this question as off-topic.**
I am having a little issue with the following lines.
from __future__ import print_function
print()
If I open up my Windows CLI and run it, it runs a... |
Python, copy only directories
Question: I have a program that has a list of some files. I have to copy only the
directories and the subdirectories from the list to a specified directories
and don't need to copy the files. I tried this, but it doesn't work.
def copiarDirs():
items = list.curselection(... |
sending mails with different domain names in python
Question: I'm getting "SMTP AUTH extension not supported by server" while sending mails
with different domain names. For example, I have sent mails using
person@example.com. Here my domain is example.com.
when I trying send mail I am getting "SMTP AUTH extension not ... |
Split String with unicode and backslash with Python
Question: I am experiencing trouble extracting a float from a string. The string is the
output of webscraping:
input = u'<strong class="ad-price txt-xlarge txt-emphasis " itemprop="price">\r\n\xa3450.00pw</strong>'
I want to get:
`output: 3450.00... |
Unable to add network printer using python
Question: I am very new to python and trying to execute printer installation using
python but it doesn't work. If I execute the same using cmd, it works.
import os
os.system("rundll32 printui.dll PrintUIEntry /in /n \\print-kunnu.com\FollowYou")
When I... |
How to list HDFS directory contents using webhdfs?
Question: Is it possible to check to contents of a directory in HDFS using `webhdfs`?
This would work as `hdfs dfs -ls` normally would, but instead using `webhdfs`.
How do I list a `webhdfs` directory using Python 2.6 to do so?
Answer: You can use the `LISTSTATUS` ... |
End of script output before headers: wsgi.py
Question: I am trying to install my django project with Apache, mod_wsgi and python3.
but Apache still gives this error:
Exception ignored in: <module 'threading' from '/usr/lib/python3.4/threading.py'>
Traceback (most recent call last):
File "/us... |
Web Scraping with Python - Selecting div, h2 and h3 class
Question: This is my first time with Python and web scraping. Have been looking around
and still unable to get what I need to do.
Below are print screen of the elements that I've used via Chrome.
What I am trying to do is that, I am trying to get the apartment... |
Python script runs perfect in PyCharm but in terminal don't
Question: I really don't understand... If you need screenshots of some settings please
tell me because I really don't know why it works in PyCharm but not outside
Pycharm...
from selenium import webdriver
from selenium.webdriver.support.ui i... |
gsutil acl set command AccessDeniedException: 403 Forbidden
Question: I am following the steps of setting up Django on Google App Engine, and since
Gunicorn does not serve static files, I have to store my static files to
Google Cloud Storage.
I am at the line with "Create a Cloud Storage bucket and make it publically
... |
Python ftp.retrbinary() does not work when called parallelized in function
Question: I am using a script to retrieve data from a ftp-server. As I want to
parallelize the download, `ftp.retrbinary` is called within a function.
Atm the working code looks like this:
from ftplib import FTP
def down... |
How do I lazy evaluate variables in a python eval expression
Question: The scenario is that my user can supply an expression string for evaluation.
It could be:
"power=(x**2+y**2)**0.5"
Then I get an input stream of data with labels. E.g.:
x ; y ; z
1 ; 2 ; 3
1 ; 3 ; 4
... |
Python: Accessing a particular cell in a data frame, change it, then save into a new version of the data frame
Question: Using Pandas, I have a data frame with a column containing a string that I am
splitting when a ; or , is seen:
import re
re.split(';|,',x)
I want to iterate through the colum... |
python gettext: specify locale in _()
Question: I am looking fo a way to set the language on the fly when requesting a
translation for a string in gettext. I'll explain why :
I have a multithreaded bot that respond to users by text on multiple servers,
thus needing to reply in different languages. The
[documentation](... |
Create new columns based on multiple conditions in Python
Question: I have the following dataframe:
data = [
(27450, 27450, 29420,"10/10/2016"),
(29420 , 36142, 29420, "10/10/2016"),
(11 , 11, 27450, "10/10/2016")]
#Create DataFrame base
df = pd.DataFrame(data, columns=("User_... |
Can't connect to local Machine IP through TCP From Arduino Uno using SIM900 Shield
Question: So you have a basic understanding of the parts im using, I have:
* Arduino Uno
* Seeed Studio GPRS Shield v2.0 (<http://www.seeedstudio.com/wiki/GPRS_Shield_V2.0>)
* Ultimate GPS for Adafruit V3.3 (<https://www.adafrui... |
Django - aggregate queryset by week of year
Question: I have model looking like this:
class TestData(models.Model):
name = models.CharField(max_length=255)
one_value = models.IntegerField()
second_value = models.IntegerField()
create_at = models.DateTimeField()
Is an... |
Python (pygame) using the sprites and classes to make clones of images
Question:
import pygame
import time
import random #Loads pygame and clock and random function
pygame.init() #Intiates pygame
display_width = 1440
display_height = 900
gameDisplay = pygame.display.set_mode(... |
HandlerSSHTunnelForwarderError with SSHTunnelForwarder
Question: I am trying to connect to my remote postgres db as follows:
from sshtunnel import SSHTunnelForwarder #Run pip install sshtunnel
from sqlalchemy.orm import sessionmaker #Run pip install sqlalchemy
with SSHTunnelForwarder(
... |
Why can't I see all stats for object from Facebook Graph API
Question: I'm using the [Python SDK for Facebook's Graph
API](https://github.com/mobolic/facebook-sdk) to fetch how many times a
Facebook page has been liked. I went to the [API
Explorer](https://developers.facebook.com/tools/explorer/) to obtain an access
to... |
python - how to write empty tree node as empty string to xml file
Question: I want to remove elements of a certain tag value and then write out the `.xml`
file WITHOUT any tags for those deleted elements; is my only option to create
a new tree?
There are two options to remove/delete an element:
>
> [clear()](https://... |
How to increment a variable contained within a class in python from outside of its class?
Question: I have a fairly simple python question, as I am pretty new to the language. I
started writing a quick program just for practice, but have now become
frustrated because I cannot get it to work.
import rando... |
Can't find a constant-time module in cryptography package used on AWS Lambda
Question: _[I am new to Python 2.7 and AWS Lambda, any help is appreciated]_
I followed the [AWS Lambda
tutorial](https://aws.amazon.com/blogs/compute/scheduling-ssh-jobs-using-aws-
lambda/) and created a virtualenv to include Python libs ass... |
ImportError: cannot import name corpora with Gensim
Question: I have installed Anacoda Python v2.7 and Gensim v 0.13.0
I am using Spyder as IDE
I have the following simple code:
from gensim import corpora
* * *
I got the following error:
from gensim import corpora
File... |
Unable to read HTML content
Question: I'm building a webCrawler which needs to read links inside a webpage. For
which I'm using urllib2 library of python to open and read the websites.
I found a website where I'm unable to fetch any data. The URL is
"<http://www.biography.com/people/michael-jordan-9358066>"
My code,
... |
Haar- Cascade face detection OpenCv
Question: I used the following code to detect a face using Haar cascade classifiers
provided by OpenCv Python. But the faces are not detected and the square
around the face is not drawn. How to solve this?
import cv2
index=raw_input("Enter the index No. : ")
... |
Python translating C saxpy
Question: This is the C code:
btemp = (*beta)/(*beta_prev);
for (k=0; k<xsize*ysize; k++) {
parray[k] = zarray[k] + btemp*parray[k];
}
And I am doing the following in Python:
def saxpy(a, x, y):
return np.array([a * xi + yi for xi, yi ... |
python replace not working
Question: I am trying to do multiple replaces in python but the replace is not working,
it only replaces the `<UNK>` but not `</s>`. Can anybody tell me where the
error is?
text=text.replace(":<UNK>","")
text=text.replace("</s>","")
Answer: Your code worked correctly... |
Using type hints to translate Python to Cython
Question: Type Hints now are available in Python 3.5 version. In the specification ([PEP
484](https://www.python.org/dev/peps/pep-0484/)) the goals (and the non-goals)
are exposed clearly:
> # Rationale and Goals
>
>> This PEP aims to provide a standard syntax for type a... |
Python anywhere modules not accessible outside main directory
Question: In my attempts to create a web app with python anywhere I have discovered that
my preferred module web.py is not preinstalled like other modules such as
flask. Upon looking through some forums I came to the understanding that
installation would occ... |
Accessing website with urllib returns error, retrieving information from Results Page
Question: Hello I created a code in python so I could access a reverse phone lookup site
and determine if a phone is a cell phone or land line. The website I am using
is whitepages, whose results page will only include the phrase "VoI... |
Python: many-to-many comparison to find required set of data
Question: This is my first question so please forgive any mistakes.
I have a large file(csv) with several(~10000000+) lines of information like
the following example:
date;box_id;box_length;box_width;box_height;weight;type
--snip--
199... |
PyQt5 app exits on error where PyQt4 app would not
Question: I have been developing a scientific application using PyQt4 for a couple of
weeks, and decided to switch over to PyQt5. Aside from a few things to iron
out one thing is puzzling me, and I'm not sure if its intended behavior or
not.
When Using PyQt4: if I had... |
Buildozer android APK Import Error
Question: Please help.
My kivy program runs perfect on the desktop (Mac OS, using buildozer and
Android-new toolchain).
However once i build the APK and test it on the android Emulator (Andyroid) i
get the following error in the logcat regarding the user class that i import.
Do i ne... |
Open links from txt file in python
Question: I would like to ask for help with a rss program. What I'm doing is collecting
sites which are containing relevant information for my project and than check
if they have rss feeds. The links are stored in a txt file(one link on each
line). So I have a txt file with full of ba... |
how to remove the delay in obtaining data from the Arduino via COM?
Question: I have an Arduino connected to the joystick. Arduino sends the data via COM
port to my PC. On PC, the data processed by the program in Python, in which
the circle moving with joystick. The fact is that after a few minutes there is
a delay bet... |
Publish python project with imported modules
Question: I would like to publish a python project, but i use modules in it like socket.
How do i add to the project code that is not mine? Is that even legal?
Answer: There's no need to add modules that are in the standard library. For other
dependencies, you can
* tes... |
Django Error - ImportError: cannot import name get_cache
Question: I was running my project using Django 1.8 and it was working properly. But
then I had to upgrade Django to 1.9 now when I again run my project it gave an
error - ImportError: cannot import name get_cache.
python manage.py syncdb
and... |
JSON to data frame after some calculations python
Question: I have a JSON file
{
"b0:47:bf:af:c1:42":
{
"No. of visits": 10, "cities":
{
"Mumbai": {"count": 5,"last_visited": "5/22/2016"},
"Kolkata": {"count": 2,"last_visited": "5/22/2... |
Changing a variable in a list does not affect the list
Question: I've been attempting to write some code to tune variables in my chess program,
and I found that this code doesn't do what I expect it to do at all.
import random
# Knight value, bishop value, rook value, queen value
values = [3... |
Python Saving long string in text file
Question: I have a long string that I want to save in a text file with the code:
`taxtfile.write(a)`
but because the string is too long, the saved file prints as:
"something something ..... something something"
how do I make sure it will save the entire s... |
I cant figure out the read part of the Python program. Please assist
Question: Write:
def main():
import random
#Open a file named numbers.txt.
myfile = open('numbers.txt', 'w')
file_size= random.randint(4,7)
#Produce the numbers
fo... |
Scrape special characters in Python Beautiful Soup
Question: How can I remove (or encode) the special characters from the page referenced
below?
import urllib2
from bs4 import BeautifulSoup
import re
link = "https://www.sec.gov/Archives/edgar/data/4281/000119312513062916/R2.htm"
... |
Scraping Instagram followers page using selenium and python
Question: I have a question related to scraping the instagram followers page. I have a
code but it displays only 9 followers. Kindly help me.
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdri... |
Python ignoring while loop with True condition
Question: I'm writing a menu for a simple game, so I thought to use a while loop to let
the user choose his wanted option by clicking on it. While my program works
properly until this loop, it does not continue when reaching the line of the
following loop:
p... |
Log all save/update/delete actions in all django models
Question: There are several models in my django app. Some of them derive from
models.Model, some - from django-hvad's translatable model. I want to log
every save/delete/update operation on them. I am aware of standard django
logger of admin actions, but they are ... |
GAE Python - OperationalError: (2013, 'Lost connection to MySQL server during query')
Question: I've been trying to connect to ClouSQL using Flexible Environments (vm:true)
but when I upload my app using:
gcloud preview app deploy --version MYVERSION
An error is thrown:
OperationalE... |
specific Regular expression search python
Question: This is my first post. I always come to this forum looking for an answer when
it comes to code.
I have been fighting with understanding regular expressions in Python, but it
is kind of hard.
I have text that looks like this:
Name: Clash1
Distanc... |
statsmodels: What are the allowable formats to give to result.predict() for out-of-sample prediction using formula
Question: I am trying to use `statsmodels` in python to impute some values in a Pandas
`DataFrame`.
The third and fourth attempts below (df2 and df3) give an error `***
AttributeError: 'DataFrame' object ... |
How to delete alphanumeric words out of a Unicode file
Question: I need to use a dictionary database, but most of it is some alphanumeric
useless stuff, and the interesting fields are either non alphanumeric (such as
chinese characters) or inside some brackets. I searched a lot, learned about a
lot of tools like sed, a... |
Google Vision API text detection Python example uses project: "google.com:cloudsdktool" and not my own project
Question: I am working on the python example for Cloud Vision API from [github
repo](https://github.com/GoogleCloudPlatform/cloud-
vision/tree/master/python/text).
I have already setup the project and activat... |
OpenCV grabcut() background color and Contour in Python
Question: I am using Python and OpenCV. I am now using `grabcut()` to crop out the
object I want. Here is my code:
img = cv2.imread('test.jpg')
img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
mask = np.zeros(img.shape[:2], np.uint8)
bgdM... |
Why is my Spark DataFrame much slower than RDD?
Question: I have a very simple Spark DataFrame, and when running a DataFrame groupby,
the performance is terrible - about 8x slower than the (in my head) equivalent
RDD reduceByKey...
My cached DF is just two columns, customer and name with only 50k rows:
... |
python: filter a list of strings based on a string name
Question: I have a lists of strings that look like this:
li1 = ['pin 2.3','vlo 5.4', 'lu 1.3', '3 packages installed', '', 'bla']
l12 = ['pin 2.3','vlo 5.4', '2 packages installed', 'bla', 'bla']
I want to filter out from the lists th... |
Scrapy and Pycharm - Stange import error - No module named [insert name of scrapyproject here]
Question: Hi Stackoverflow Community
I encountered the following issue. I have a scrapy project which I added to my
project:
-.idea
-associate
-core
-scrapyproject
-- scrapyproject_one
... |
python float to string without precision loss
Question: For python 3 I want to convert a float to a string, with possibly different
length (i.e. number of digits) but with full precision.
Also I need to have a decimal point in any case:
1 -> '1.'
1/10 -> '0.100000000000000005551115123125782702118... |
InvalidArgumentError: You must feed a value for placeholder tensor 'Placeholder' with dtype float and shape [1000,625]
Question: I get the above unexpected error when trying to run this code:
# -*- coding: utf-8 -*-
"""
Created on Fri Jun 24 10:38:04 2016
@author: andrea
"""
... |
result of coupled ODE in python code is different from mathematica
Question: As per my language knowledge my code is written correct. But It is not giving
me correct solution (plot). When I had solved same system of ODE's in
mathematica, I have correct solution and both solutions are totally different.
I am writing a r... |
How to write the data of 3 dictionaries in a table separated by tab into a text file?
Question: Say I have the following 3 dictionaries:
d1 = {'Ben': {'Skill': 'true', 'Magic': 'false'}, 'Tom': {'Skill': 'true', 'Magic': 'true'}}
d2 = {'Ben': {'Strength': 'wo_mana', 'Int': 'wi_mana', 'Speed': 'wo_man... |
How does Perl avoid shebang loops?
Question: `perl` interprets the shebang itself and mimics the behavior of `exec*(2)`. I
think it emulates the Linux behavior of splitting on all whitespace instead of
BSD first-whitespace-only thing, but never mind that.
Just as a quick demonstration `really_python.pl`
... |
Training a simple net doesn't appear to change values of variables more than once
Question: I'm sure I'm missing something obvious. Here's the tail end of my code:
# simple loss function
loss = tf.reduce_sum(tf.abs(tf.sub(x4, yn)))
train_step = tf.train.GradientDescentOptimizer(0.000001).min... |
Equivalent code in python (time)
Question: Javascript code:
var date = new Date(1466278504960);
return: Sat Jun 18 2016 20:35:04 GMT+0100 (WEST)
How can I convert the same number to date in python ?
When I use
datetime.datetime.fromtimestamp(int("1466278504960")).strftime('%Y-%m-%d... |
Running phantomjs on linux using python
Question: I followed [this link](http://stackoverflow.com/questions/8778513/how-can-i-
setup-run-phantomjs-on-ubuntu) and now when I type `phan` and then tab (`\t`)
it does autocomplete to phantomJS.
Yet if I run `phantomJS -v` or `phantomJS --version` I get:
bash... |
How to import GstPbutils?
Question: I'm trying to use the GstPbutils python3 module, but just importing it breaks
everything, here is the code:
#!/usr/bin/python3
import gi
gi.require_version('GstPbutils', '1.0')
from gi.repository import GstPbutils
print('Hello World!')
A... |
How can I convert a string sent over UART to integer in python?
Question: I'm having difficulty converting a string I'm receiving over UART to the
decimal version of it. I read in one byte with `port.read(1)` then print it
print "%s: %s" % ( time.ctime(time.time()), str)
This prints out the expecte... |
deleting a file after uploading to s3 in python
Question:
def upload(s):
conn=tinys3.Connection("AKIAJPOZEBO47FJYS3OA","04IZL8X9wlzBB5LkLlZD5GI/",tls=True)
f = open(s,'rb')
z=str(datetime.datetime.now().date())
x=z+'/'+s
conn.upload(x,f,'crawling1')
os.remove(s... |
Iterate through JSON [Python]
Question: I am reading the following JSON file in python:
{
"name": "Property",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"uuid": {
"type": "string"
... |
Parse POST HTTP response using Python
Question: i want to parse a POST HTTP response using python.
My response looks like:
{
"Result": 0,
"ResponseStatus": {
"ErrorCode": null,
"Message": null,
"StackTrace": null,
"Errors": null
},
"SessionId": "68... |
Python MySQLdb - Connection in a class
Question: I am making a Python project where I have to seek and retreive data from a
database.
I tried making a class, in which I declare the connection and do my queries,
here is moreless what I have so far.
import MySQLdb
dbc =("localhost","root","1234","use... |
Scrapy Xpath output empty
Question: I would like extract data on this website : <http://www.pokepedia.fr/Pikachu>
I'm learning the python and how to use Scrapy and my problem is : Why I can't
retrieve the data with Xpath ?
My Xpath look good when i test xpath in my browser, it return me the correct
value. (Google Chro... |
How to increase the model accuracy of logistic regression in Scikit python?
Question: I am trying to predict the admit variable with predictors such as gre,gpa and
ranks.But the prediction accuracy is very less(0.66).The dataset is given
below. <https://gist.github.com/abyalias/3de80ab7fb93dcecc565cee21bd9501a>
Please... |
python-social-auth with Django: ImportError: No module named 'openid.association'
Question: I am trying to use `python-social-auth` with Django 1.9 and Python 3. As far
as I can tell, I have installed all the necessary requirements, and have all
the required settings in my `settings.py`. However, when I try to run
migr... |
How can I disable ExtDeprecationWarning for external libs in flask
Question: When I run my script, I get this output:
/app/venv/lib/python2.7/site-packages/flask/exthook.py:71: ExtDeprecationWarning: Importing flask.ext.sqlalchemy is deprecated, use flask_sqlalchemy instead.
.format(x=modname), Ext... |
Sort JSON dictionaries using datetime format not consistent
Question: I have JSON file (post responses from an API) - I need to sort the
dictionaries by a certain key in order to parse the JSON file in chronological
order. After studying the data, I can sort it by the date format in metadata
or by the number sequences ... |
Flask-edits: AttributeError: 'TokenStream' object has no attribute 'next'
Question: I am trying to test the flask-edits package
(<https://github.com/nathancahill/Flask-Edits>)
Can anyone help with this error: AttributeError: 'TokenStream' object has no
attribute 'next'
@app.route('/')
def hello_... |
Issue with requests module in python for AWS Lambda
Question: I am writing a lambda function with an intent that uses requests to pull
information from a _Wolfram_ CloudObject. Here is the relevant part of the
code:
from __future__ import print_function
import requests
.
.
.
... |
How to customize pybusyinfo window in (windows OS) to make it appear at top corner of window and the other formatting options?
Question: I am writing a python script to get the climate conditions in particular area
every 30 minutes and give a popup notification.
This code gives popup at the center of the screen which ... |
Cannot run pyspark in Jupyter
Question: I have Windows 10 and have installed spark following the instructions from:
<https://hernandezpaul.wordpress.com/2016/01/24/apache-spark-installation-on-
windows-10/>
Now I open my jupyter notebook, and type the following:
import os
import sys
# Path... |
How to keep trying to establish connection in Python
Question: If the server is not up when I try to run the following code, I just get a
Connection refused error.
How can I make the sender below to keep trying to establish connection and
perhaps sending until the remote server is indeed up and the connection is
succe... |
Converting Google Analytics Reporting API V4 request results to csv with Python
Question: I'm trying to create a nicely formatted csv file with Python from a Google
Analytics Reporting API V4 request results.
The setup is using the provided example "Hello Analytics Reporting API V4."
<https://developers.google.com/ana... |
Python Removing Columns
Question: I am trying to remove the last two columns from my data frame by using Python.
The issue is there are cells with values in the last two columns that we don't
need, and those columns don't have headers.
Here's the code I wrote, but I'm really new to Python, and don't know how to
take ... |
Installing opencv in python
Question: I'm having some trouble installing OpenCV. I have been using Anaconda, and I
copied the `cv2.pyd` file into the `...\Lib\site-packages` folder. When I get
type `import cv2` into Python I get this error:
`Traceback (most recent call last):
File "<stdin>", line 1... |
Python quit unexpectedly, Segmentation fault: 11
Question: I have installed python 2.7.12. I used "pip install pulp" to install pulp
package. My problem is that "import pulp" gives me the following error. How
can I solve this problem. Let me know if you need something else to debug. I
have a Mackbook pro with El Capita... |
using import inside class
Question: I am completely new to the python class concept. After searching for a
solution for some days, I hope I will get help here:
I want a python class where I import a function and use it there. The main
code should be able to call the function from the class. for that I have two
files i... |
Detecting ordered iterables (sequences) in python
Question: I am attempting to build a function that takes an iterable and returns a
tuple, provided that the iterable will always be iterated over in a canonical
way. For example, if the input iterable is `list` or `tuple`-like, I want to
accept the input, but not if it ... |
pylint, coroutines, decorators and type inferencing
Question: I'm working on a Google AppEngine project and I recently upgraded my pylint
version to:
No config file found, using default configuration
pylint 1.5.6,
astroid 1.4.6
Python 2.7.10 (default, Oct 23 2015, 19:19:21)
This seems ... |
Python: Simple Web Crawler using BeautifulSoup4
Question: I have been following TheNewBoston's Python 3.4 tutorials that use Pycharm,
and am currently on the tutorial on how to create a web crawler. I Simply want
to download all of XKCD's Comics. Using the archive that seemed very easy.
Here is [my code](http://pastebi... |
Merge a list of pandas dataframes
Question: There has been many similar questions but none specifically to this.
I have a list of data frames and I need to merge them together using a unique
column `(date)`. Field names are different so concat is out.
I can manually use `df[0].merge(df[1],on='Date').merge(df[3],on='D... |
How to delete entire row of data set given a condition on a column in csv file?
Question: Here is a snippet of the following data-set in csv format:
quantity revenue time_x transaction_id user_id
1 0 57:57.0 0 0 0
1 0 18:59.0 0 1
... |
My spark app is too slow, how can I increase the speed significantly?
Question: This is part of my spark code which is very slow. By slow I mean for 70
Million data rows it takes almost 7 minutes to run the code but I need it to
run in under 5 seconds if possible. I have a cluster with 5 spark nodes with
80 cores and 1... |
selecting multiple ROI in an image
Question: hey guys i am using opencv 2.4 with python 2.7 on ubuntu14.04
I want to select multiple Region of Interest in an image is it possible to do
so.
I want to do motion detection in only the area i have selected to do so any of
the following theory can solve my problem but don'... |
Sort a nested dictionary in Python
Question: I have the following dictionary.
var = a = {
'Black': { 'grams': 1906, 'price': 2.05},
'Blue': { 'grams': 9526, 'price': 22.88},
'Gold': { 'grams': 194, 'price': 8.24},
'Magenta': { 'grams': 6035, 'price': 56.69},
'Maroon': { 'gr... |
TwitterAPI for Python: using result from request in a new request
Question: I want to collect all user data from the followers from a specific twitter
user. First, I collect the user_id's of the followers from the user using
followers/id. Thereafter I want to use users/lookup in order to collect the
user data from the ... |
Python 3.5:Not able to remove non alpha -numeric characters from file_name
Question: i have written a python script to rename all the files present in a folder by
removing all the numbers from the file name but this doesn't work . Note :Same
code works fine for python2.7
import os
def rename_fil... |
Python open FTP url and write to file
Question: How can I open and FTP url and download it into a file. What I'm trying looks
something like this:
from contextlib import closing
from urllib.request import urlopen
url = 'ftp://whatever.com/file.txt'
target_path = 'file.txt'
with ... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.