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python Programming Glossary: f.tellGet last n lines of a file with Python, similar to tail http://stackoverflow.com/questions/136168/get-last-n-lines-of-a-file-with-python-similar-to-tail # to step back go to the beginning instead f.seek 0 pos f.tell lines f.read .splitlines if len lines to_read or pos 0 return.. def tail f window 20 BUFSIZ 1024 f.seek 0 2 bytes f.tell size window block 1 data while size 0 and bytes 0 if bytes BUFSIZ..
http://stackoverflow.com/questions/14145082/file-tell-inconsistency this way Input f open 'test.txt' 'r' for line in f print f.tell f.tell Output f.tell 8192 f.tell 8192 f.tell 8192 f.tell 8192.. way Input f open 'test.txt' 'r' for line in f print f.tell f.tell Output f.tell 8192 f.tell 8192 f.tell 8192 f.tell 8192 I consistently.. 'test.txt' 'r' for line in f print f.tell f.tell Output f.tell 8192 f.tell 8192 f.tell 8192 f.tell 8192 I consistently get..
Python file.tell() giving strange numbers? http://stackoverflow.com/questions/15934950/python-file-tell-giving-strange-numbers open test.txt while True a f.readline print .format repr a f.tell if a break The result 'hello n' 7 ' n' 9 ' data1 blah blah.. test.txt rb while True a f.readline print .format repr a f.tell if a b break The result b'hello r n' 7 b' r n' 9 b' data1 blah..
Most efficient way to search the last x lines of a file in python http://stackoverflow.com/questions/260273/most-efficient-way-to-search-the-last-x-lines-of-a-file-in-python check with open fname r as f f.seek 0 2 # Seek @ EOF fsize f.tell # Get Size f.seek max fsize 1024 0 0 # Set pos @ last n chars..
Improve speed of reading and converting from binary file with python http://stackoverflow.com/questions/5804052/improve-speed-of-reading-and-converting-from-binary-file-with-python f os.path.getsize f.filename fullsamples.itemsize f.tell position 0 for rec in xrange int self.header 'nrecs' for channel..
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