Add plot script for easily plotting curves

bin/plot

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+import sys
+import matplotlib.pyplot as plt
+
+
+def parse_input(lines):
+    x_vals = []
+    y_vals = []
+    for line in lines:
+        line = line.strip()
+        if not line:
+            continue
+        parts = line.replace(',', ' ').split()
+        if len(parts) == 1:
+            y_vals.append(float(parts[0]))
+            x_vals.append(len(x_vals))
+        elif len(parts) >= 2:
+            x_vals.append(float(parts[0]))
+            y_vals.append(float(parts[1]))
+        else:
+            continue
+
+    return x_vals, y_vals
+
+
+def parse_file(file):
+    with open(file, "r") as f:
+        lines = f.readlines()
+    return parse_input(lines)
+
+
+def parse_stdin():
+    lines = sys.stdin.readlines()
+    return parse_input(lines)
+
+
+def plot(x_vals, y_vals):
+    plt.plot(x_vals, y_vals)
+    plt.grid(True)
+    plt.show()
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2:
+        x_vals, y_vals = parse_file(sys.argv[1])
+    else:
+        x_vals, y_vals = parse_stdin()
+
+    plot(x_vals, y_vals)