Python implementation code for traversing folders and reading/writing files

#-*- coding: UTF-8 -*- 

'''
1, read all the files in the specified directory
2, read the specified file, output file content
3, create a file and save it to the specified directory
'''
import os

# Iterate through the specified directory and display all file names in the directory
def eachFile(filepath):
  pathDir = (filepath)
  for allDir in pathDir:
    child = ('%s%s' % (filepath, allDir))
    print ('gbk') # .decode('gbk') is the solution to the problem of Chinese displaying garbled codes

# Read the contents of the file and print it
def readFile(filename):
  fopen = open(filename, 'r') # r is for read
  for eachLine in fopen:
    print "The following was read:",eachLine
  ()
  
# Input multiple lines of text, write to a specified file and save to a specified folder
def writeFile(filename):
  fopen = open(filename, 'w')
  print "\r Please enter as many lines of text as you like."," ( importation .No. Enter to save)"
  while True:
    aLine = raw_input()
    if aLine != ".":
      ('%s%s' % (aLine, ))
    else:
      print "File saved!"
      break
  ()

if __name__ == '__main__':
  filePath = "D:\\FileDemo\\Java\\"
  filePathI = "D:\\FileDemo\\Python\\"
  filePathC = "C:\\"
  eachFile(filePathC)
  readFile(filePath)
  writeFile(filePathI)