如何在文件python中顯示行數

Question

我假設我有一個包含許多行的文本文件，例如：

fsdfgsfgf
b3cbc3b45
456346aaa
bce45fa45

我想顯示每一行及其編號：

text_file = open(r'C:\\Users\\user\\Text.txt', 'r')
for a in Plaintxt_file:
    text=a[0:9]
    print ('Text:', text )
    print('it is number is:', a)

我想要的結果是：

Text: b3cbc3b45
it is number is:2

但是我的結果是：

Text: b3cbc3b45
it is number is:b3cbc3b45

那么如何在python中顯示文件的行數呢？

Answer 1

# with open(filename) as file:
#     for index, line in enumerate(file,1)
file = ['fsdfgsfgf','b3cbc3b45','456346aaa','bce45fa45']
for index, line in enumerate(file,1):
    print ('Text:', line )
    print('it is number is:', index)

出：

Text: fsdfgsfgf
it is number is: 1
Text: b3cbc3b45
it is number is: 2
Text: 456346aaa
it is number is: 3
Text: bce45fa45
it is number is: 4

Answer 2

您可以將enumerate命令與readlines()方法一起使用，如下所示：

f = open('test.txt', 'r')
for index, line in enumerate(f.readlines()):
     # index represents the index of the line and line the line in the file.

Answer 3

使用with打開文件， enumerate顯示的行數。

with open('test.txt') as f:
    for index, line in enumerate(f, 1):
        print 'Text:', line,
        print 'Its number is:', index