将文本添加到字符串中所有行的末尾

Question

Say I have this string:

""" 
iris
jonah
car
donut
"""

How do I add something at the end of all the lines? The amount of lines in the string may vary from time to time.

Something like:

l = duplicate.split('\n')
l[1]+= 'X'
l = '\n'.join(l)
print(l)

Duplicate being the string's name.

This code only adds 'X' to the end of line 1.

How can I do this for every line?

Desired output:

""" 
irisX
jonahX
carX
donutX
"""

Thanks!

Answer 1

Just use str.replace() :

addition = 'X'
new_string = duplicate.replace('\n', addition + '\n')

Answer 2

删除l[1]+= 'X'行，并将l = '\\n'.join(l)更改为l = 'X\\n'.join(l) 。

Answer 3

First, split as you did duplicate on '\\n' :

splitted = duplicate.split('\n')

Then append 'x' at the end of each line with a for , and join these line on '\\n' . I do both operations in a signle line:

"\n".join(line + "x" for line in splitted)

If you're not familiar with generator expressions, this is somewhat similar to:

withSuffixes = []
for line in l:
    withSuffixes.append(splitted + "x")
"\n".join(withSuffixes)

Answer 4

您可以使用map将功能应用于通过split获得的列表的所有元素，然后join这些元素join到单个字符串中：

"\n".join(map(lambda word: word+"x", s.split("\n")))

Answer 5

Try this, uses list comprehension to add 'X' to each line and then joins it by a newline character.

duplicate = """ 
iris
jonah
car
donut
"""

l = duplicate.split('\n')
l = [line + 'X' for line in l]
final = '\n'.join(l)