python中创建文件和读取文件

'makeTextFile.py -- create text file'
import os
ls = os.linesep

#get filename
while True:

    if os.path.exists('fname'):
        print("ERROR:'%s' already exists" % 'fname')
    else:
        break

#get file content (text) lines
all = []
print("nEnter lines ('.' by itself to quit). n")

# loop until user terminates input
while True:
    entry = input('>')
    if entry == '.':
        break
    else:
        all.append(entry)

# write lines to file with proper line-ending
fobj = open('fname','w')
fobj.writelines(['%s%s' % (x, ls) for x in all])
fobj.close()
print("DONE!")

'readTextFile.py -- read and display text file'

#get filename
fname = input("Enter filename:")
print()

#attempt to open file for reading
try:
    fobj = open(fname,"r")
except IOError:
    print("fname file open error",fname)
else:
    #display contents to the screen
    for eachLine in fobj:
        print(eachLine)
    fobj.close()