你需要strip():

myphrases = [" Hello ", " Hello", "Hello ", "Bob has a cat"]

for phrase in myphrases:
    print(phrase.strip())

这将删除myString中所有前导和尾部的空格:

myString.strip()

好吧，作为一个初学者，看到这个帖子让我头晕目眩。于是我想到了一个简单的捷径。

虽然str.strip()可以移除开头和结尾的空格，但它对字符之间的空格没有任何作用。

words=input("Enter the word to test")
# If I have a user enter discontinous threads it becomes a problem
# input = "   he llo, ho w are y ou  "
n=words.strip()
print(n)
# output "he llo, ho w are y ou" - only leading & trailing spaces are removed 

相反，使用str.replace()更有意义，错误更少，更切题。 下面的代码可以泛化str.replace()的使用

def whitespace(words):
    r=words.replace(' ','') # removes all whitespace
    n=r.replace(',','|') # other uses of replace
    return n
def run():
    words=input("Enter the word to test") # take user input
    m=whitespace(words) #encase the def in run() to imporve usability on various functions
    o=m.count('f') # for testing
    return m,o
print(run())
output- ('hello|howareyou', 0)

在diff. functions中继承相同的函数时可以很有帮助。

我想删除字符串中过多的空格(也在字符串之间，而不仅仅是在开头或结尾)。我做了这个，因为我不知道该怎么做:

string = "Name : David         Account: 1234             Another thing: something  " 

ready = False
while ready == False:
    pos = string.find("  ")
    if pos != -1:
       string = string.replace("  "," ")
    else:
       ready = True
print(string)

这将取代一个空间中的双精度空间，直到不再有双精度空间

这也可以用正则表达式来实现

import re

input  = " Hello "
output = re.sub(r'^\s+|\s+$', '', input)
# output = 'Hello'

你需要strip():

myphrases = [" Hello ", " Hello", "Hello ", "Bob has a cat"]

for phrase in myphrases:
    print(phrase.strip())