在Python中将行号添加到输出中 [英] Adding line numbers to the output in Python

问题描述

例如，如果输入文件是:

For example, if the input file is:

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

那么输出将是:

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

我很难在每行中添加行.我的程序是:

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

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)

推荐答案

您应该添加:

newFile = open(yourfile, 'w')
count = 1

for line in readfile:
    newFile.write (str(count) + '\t' + line)
    count += 1
newFile.close()

如果您只想打印到控制台写入(这取决于您在第二次编辑中使用的变量名称):

If you just want to print to console write (this is according to the variable names you've used in your second edit):

for lines in openfile:
    print str(count) + '\t' + lines
    count += 1

不过，您应该自己做家庭作业！

You should do your homework yourself, though!

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