Ask the classmate of a Python file operation problem, demand is:

Increase the data file is a real-time dynamic, need real-time statistics in data increase file data lines, a great god please what method

CodePudding user response:

 n=0 
Pos=0 
With the open (' z:/TMP. TXT) as f: 
While True: 
Time. Sleep (2) 
F.s eek (pos) 
N +=len (f.r eadlines ()) 
Print (n) 
Pos=f.t ell () 

every 2 seconds to print a line number.