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