python数字と文字列の判断

数値と文字列の判断

type('9')

str

type(9)

int

num = '8asd'

num.isdigit()   #       

False

num.isalpha()  #      

False

name = 'debug' 

name.isalpha()  #        

True

number = ' '

number.isdigit()

False

number.isdecimal()   #         

False

number.isnumeric()   #       

True

num3 = '3'

num3.isdecimal()

True

num3.isdigit()

True

str_num = input('give me a number: ')

give me a number: 243242

str_num.isdigit()

True

type(str_num)

str

num = int(str_num)

type(num)

int

直接デジタルタイプnum=intに変換(input('give me a number'))
まとめ:判定数値範囲isnumeric>isdigit>isdecimal