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学习Python困难方式练习17额外问题

python

我正在执行Zed Shaw的精彩学习Python The Hard
Way
,但我遇到了一个额外的问题:9–
10行可以写成一行,怎么写?我尝试了一些不同的想法,但无济于事。我可以继续前进,但是那会带来什么乐趣呢?

from sys import argv
from os.path import exists

script, from_file, to_file = argv

print "Copying from %s to %s" % (from_file, to_file)

# we could do these two on one line too, how?
input = open(from_file)
indata = input.read()

print "The input file is %d bytes long" % len(indata)

print "Does the output file exist? %r" % exists(to_file)
print "Ready, hit RETURN to continue, CTRL-C to abort."
raw_input()

output = open(to_file, 'w')
output.write(indata)

print "Alright, all done."

Zed还写道,他可以在一行中完成整个脚本。我不确定他的意思。

随时随地为我提供帮助:给出答案或仅作提示-甚至可能包含对该问题的模糊或隐藏答案。


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2020-12-20

共1个答案

小编典典

indata = open(from_file).read()
2020-12-20