PYTHON-将行号添加到输出 [英] PYTHON- adding line numbers to the output

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本文介绍了PYTHON-将行号添加到输出的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

例如,如果输入文件是:

  def main():
for i in range 10):
print(我爱蟒蛇)
print(Good bye!)

然后输出:

  1 def main():
2 for i in范围(10):
3 print(我爱蟒蛇)
4 print(Good bye!)

我很难在每行添加行。请帮忙!我的程序是:

 已更新*** 

文件名= input(请输入文件名:)
count = 0

openfile = open(filename,r)

用于openfile中的行:
linenumbers = openfile.write (str(count)+'\ t'+ lines)
count + = 1


print(count)


解决方案

使用with语句来关闭文件缓冲区并连接字符串:

pre $ 用open('file.txt','r')作为程序:
data = program.readlines()

(数据):
program.write('%d%s'%(number + 1,line))


For example, if the input file is:

def main():
    for i in range(10):
        print("I love python")
    print("Good bye!")

Then the output would be:

1   def main():
2       for i in range(10):
3           print("I love python")
4       print("Good bye!")

I have difficulty in adding lines to each line. please help! My program is:

UPDATED***

filename = input("Please enter a file name: ")
count = 0

openfile = open(filename, "r")

for lines in openfile:
    linenumbers = openfile.write(str(count)+'\t'+lines)
    count += 1


print(count)

解决方案

Use a with statement to close the file buffer and just concatenate strings:

with open('file.txt', 'r') as program:
    data = program.readlines()

with open('file.txt', 'w') as program:
    for (number, line) in enumerate(data):
        program.write('%d  %s' % (number + 1, line))

这篇关于PYTHON-将行号添加到输出的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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