Initial commit

Solutions/8_2/follow.py

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+# follow.py
+import os
+import time
+import csv
+
+def follow(filename):
+    '''
+    Generator that produces a sequence of lines being written at the end of a file.
+    '''
+    with open(filename,'r') as f:
+        f.seek(0,os.SEEK_END)
+        while True:
+             line = f.readline()
+             if line == '':
+                 time.sleep(0.1)    # Sleep briefly to avoid busy wait
+                 continue
+             yield line