python中是否有字符串折叠库函数?

string.split() 方法将在运行空白时拆分,因此您可以使用该方法,然后使用空格连接结果列表,如下所示:

' '.join(my_string.split())

TEST = """This
is        a test\twith a
  mix of\ttabs,     newlines and repeating
whitespace"""

print ' '.join(TEST.split())
# Prints:
# This is a test with a mix of tabs, newlines and repeating whitespace

您的想法是正确的,您只需要更仔细地阅读python手册:

import re
somewhitespace = re.compile(r'\s+')
TEST = """This
is        a test\twith a
  mix of\ttabs,     newlines and repeating
whitespace"""

somewhitespace.sub(' ', TEST)

'This is a test with a mix of tabs, newlines and repeating whitespace'

multi_line.replace('\n', '')

我会做好的。 '\n' 是python中的通用行尾字符。