The determined number string python

Determining whether a digital string

a='123'
if a.isdigit():
    print("a是数字" )
else:
    print("a不是数字")

The results are:

whether the string is a letter

a='abc'
print(  "是否是字母:%s"%(a.isalpha())  )
b=' '
print(  "是否是空格:%s"%(b.isspace())  )

function	Explanation
isdigit	digital
Islf	letter
isspace	Blank
isdecimal	Decimal
islower	Lower case letters
isupper	uppercase letter
istitl to	Word capitalized
isalnum	Letters and numbers