Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
241 views
in Technique[技术] by (71.8m points)

python - f.write vs print >> f

There are at least two ways to write to a file in python:

f = open(file, 'w')
f.write(string)

or

f = open(file, 'w')
print >> f, string     # in python 2
print(string, file=f)  # in python 3

Is there a difference between the two? Or is any one more Pythonic? I'm trying to write a bunch of HTML to file so I need a bunch of write/print statements through my file(but I don't need a templating engine).

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

print does things file.write doesn't, allowing you to skip string formatting for some basic things.

It inserts spaces between arguments and appends the line terminator.

print "a", "b" # prints something like "a b
"

It calls the __str__ or __repr__ special methods of an object to convert it to a string.

print 1 # prints something like "1
"

You would have to manually do these things if you used file.write instead of print.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...