Method 1:

Python can get the number of digits of an integer by converting it into a string and then querying the length of the string. For example, we can use the input function to get the integer input by the user, then convert it into a string, use the len function to get its length, and finally output it.

The code is as follows: num=int(input ("Please enter an integer:")) num _ len = len (str (num)) print (f "{num} has {num _ len}") First, we use the input function to get an integer, and then convert it into an integer type and assign it to the variable num. Then, we use str function to convert the integer into a string, use len function to get the length of the string, and assign the result to the variable num_len.

Finally, we use f-string to output the result, that is, the input integer and its corresponding digits. This method applies to any integer, whether it is positive or negative, and whether there is a leading zero or not. For example, the input integer 100, and the output number is 3; Input the integer-100, and the number of output digits is 4; Enter the integer 00000 1 and the output number is 1.

Therefore, by converting an integer into a string and using the len function to obtain its length, the number of digits of an integer can be obtained very easily.

Method 2:

First, the input integer can be realized by the input () function. For example, we can write: num=int(input ("Please enter an integer:")). Note that we convert the input string into an integer type. Then, we ask to output the number of digits of this integer. You can first convert it to a string type, and then get the length of the string through the len () function.

For example, we can write: num_str=str(num)# Convert an integer into a string length=len(numstr)# to get the length of the string print ("The number of digits of the input integer is:", length), so that the number of digits of the input integer can be output.

The complete code is: num=int(input ("Please enter an integer:")) num_str=str(num)# Convert an integer into a string length=len(num_str)# Get the length of the string to print ("Enter the number of digits of the integer as:", length).