using_file.py

简明python,一本很不错的书

#!/usr/bin/env python
# Filename: using_file.py

poem='''\
Programming is fun
When the work is done
if you wanna make your work also fun:
	use Python!
'''

f=file('poem.txt','w') # open for 'w'riting
f.write(poem) # write text to file
f.close() # close the file

f=file('poem.txt')
# if no mode is specified, 'r'ead mode is assumed by default
while True:
	line=f.readline()
	if len(line)==0: # Zero length indicates EOF
		break
	print line,
	# Notice comma to avoid automatic newline added by Python
f.close() # close the file