ex 6.5

rhasti · rhasti · commit 9895affb27ca · 2021-11-28T17:00:46.000+01:00
diff --git a/Work/follow.py b/Work/follow.py
@@ -0,0 +1,18 @@
+# follow.py
+import os
+import time
+
+f = open("Data/stocklog.csv")
+f.seek(0, os.SEEK_END)  # Move file pointer 0 bytes from end of file
+
+while True:
+    line = f.readline()
+    if line == "":
+        time.sleep(0.1)  # Sleep briefly and retry
+        continue
+    fields = line.split(",")
+    name = fields[0].strip('"')
+    price = float(fields[1])
+    change = float(fields[4])
+    if change < 0:
+        print(f"{name:>10s} {price:>10.2f} {change:>10.2f}")
