False>>>'a1234'.isdigit()# letter at the start False>>>'12.34'.isdigit()# decimal point False>>>''.isdigit()# empty string False If you know regular expressions, then you can see that str.isdigit returns True fo
另外,.isNumeric和.isDigit对于0到9以外的字符可能返回true,请参见此处stackoverflow.com/questions/228532/…