Python 字符串“in”运算符

Question

txt = "The rain in Spain stays mainly in the plain"
x = "ain" in txt
print(x) // True

txt = "The rain in Spain stays mainly in the plain "
x = " " in txt
print(x) // True

txt = "The rain in Spain stays mainly in the plain "
x = " " in txt.strip()

print(x) // True ,

即使删除空格后它也是真实的。

Answer 1

strip()只删除前导和尾随空白，而不是字符串中的所有空格。