Create charts.py

charts.py

@@ -0,0 +1,23 @@
+import matplotlib.pyplot as plt
+import matplotlib.dates as mdates
+from io import BytesIO
+
+def plot_candlestick(df):
+    fig, ax = plt.subplots(figsize=(8, 4))
+    df = df.tail(50)
+
+    for idx, row in df.iterrows():
+        color = 'green' if row['close'] >= row['open'] else 'red'
+        ax.plot([row['timestamp'], row['timestamp']], [row['low'], row['high']], color='black')
+        ax.plot([row['timestamp'], row['timestamp']], [row['open'], row['close']], color=color, linewidth=5)
+
+    ax.xaxis.set_major_formatter(mdates.DateFormatter('%H:%M'))
+    plt.xticks(rotation=45)
+    plt.title('Latest Candlestick Chart')
+    plt.tight_layout()
+
+    buf = BytesIO()
+    plt.savefig(buf, format='png')
+    buf.seek(0)
+    plt.close(fig)
+    return buf