Calculate the number of rows in a file with a Python script

Python can count the number of lines in a file, do you believe it? Whether you believe it or not, I believe it anyway. Let's take a look at how Python counts the number of rows in a file, the code is simple, I also make comments, very simple implementation ...

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#_ *_coding:utf_8# introduce SYS and System OS module import SYS import OS "Calculate the number of rows of a file" def countfilelines (filename):     count = 0    Try :         handle = open (filename, ' R ')         #循环文件句柄for eachline in handle:            #累加            count + = 1    #异常捕获    except IOError, E:         print ' File open error ', e    return count     print countfilelines ('/home/pythontab/tmp/a.php ')

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