Python3 common file reading Method Instance analysis,

Python3 common file reading Method Instance analysis,

This document describes how to use Python3 to read files. Share it with you for your reference. The details are as follows:

''' Created on Dec 17,201 2 read the file @ author: liury_lab ''' # the most convenient way is to read all the content of the file in a large string at a time: all_the_text = open ('d:/text.txt '). read () print (all_the_text) all_the_data = open ('d:/data.txt ', 'rb '). read () print (all_the_data) # more standard method file_object = open ('d:/text.txt ') try: all_the_text = file_object.read () print (all_the_text) finally: file_object.close () # '\ n' file_object = open ('d:/text.txt') try: all_the_text = file_object.readlines () print (all_the_text) finally: file_object.close () # Remove '\ n' from the end of all three sentences. file_object = open ('d:/text.txt') try: # all_the_text = file_object.read (). splitlines () # all_the_text = file_object.read (). split ('\ n') all_the_text = [L. rstrip ('\ n') for L in file_object] print (all_the_text) finally: file_object.close () # Read file_object row by row = open ('d:/text.txt') try: for line in file_object: print (line, end = '') finally: file_object.close () # def read_file_by_chunks (file_name, chunk_size = 100 ): file_object = open (file_name, 'rb') while True: chunk = file_object.read (chunk_size) if not chunk: break yield chunk file_object.close () for chunk in read_file_by_chunks ('d: /data.txt ', 4): print (chunk)

The output is as follows:

hello pythonhello worldb'ABCDEFG\r\nHELLO\r\nhello'hello pythonhello world['hello python\n', 'hello world']['hello python', 'hello world']hello pythonhello worldb'ABCD'b'EFG\r'b'\nHEL'b'LO\r\n'b'hell'b'o'

I hope this article will help you with Python programming.