What is the method in Python for removing spaces from a string?

There are several common methods to remove spaces from strings in Python.

1. Utilize the strip() method: the strip() method can remove spaces from both ends of a string. For example:

s = "   hello world   "
s = s.strip()
print(s)  # 输出：hello world

1. By using the lstrip() and rstrip() methods: lstrip() method can remove spaces on the left side of a string, while rstrip() method can remove spaces on the right side. For example:

s = "   hello world   "
s = s.lstrip()
print(s)  # 输出：hello world

s = "   hello world   "
s = s.rstrip()
print(s)  # 输出：   hello world

1. Using the replace() method: The replace() method can replace specified characters in a string, such as replacing spaces with an empty string. For example:

s = "   hello world   "
s = s.replace(" ", "")
print(s)  # 输出：helloworld

1. Regex can be used to achieve substitution by using the sub() method in the re module. One could match spaces with a regex and replace them with an empty string. For example:

import re

s = "   hello world   "
s = re.sub(r"\s", "", s)
print(s)  # 输出：helloworld

These are several commonly used methods, choose the one that best fits your specific needs.