How do i find the total number of numbers in a string?

Question

So I want to take user input and see how many numbers are in the string. How can I do that with python?

Answer 1

JT JT , I suggest isdigit function or match the numbers in the string with regex. Look at my example. Hope it helps you.
https://code.sololearn.com/ch0z6bjHpAAH/?ref=app

Answer 2

Muhammad Atif Waheed , there is no string method "isnum()" in python. The use of isdigit() is the best choice. isnumeric() does also recognize numerical representations from other languages, but this is not necessary.

Answer 3

One-liner with a list comprehension.

print(len([x for x in input() if x.isdigit()]))

Also Zero if i.isdigit() would work. No need for the == True part. It is like writing if True. Great answer by the way 👌👌

Happy Coding 😀

Answer 4

If there are only digits in input, you can use len(your_input) as already mentioned. But this means that that input can not be converted to int directly with input. If there are also other characters like letters or spaces, a version with regex can be done like this:

import re
inp = '8this i7s the 1st t1me in 2020'
print(len(re.findall(r"\d", inp)))

# result is 8 digits found

Answer 5

number = input("Enter: ")
count = 0
for i in number:
if i.isdigit()==True:
count +=1
print(count)

Answer 6

Tomiwa Joseph yeah you right no need == True: part
Just a bad programming habit thanks for the correction

Answer 7

TheWh¡teCat 🇧🇬 - I guess the regex would be r"\d+" as JT JT asked for numbers, but not digits.
But, let's see what he says.

Answer 8

@vrintle I think I meant digits, basically if I have a string that's 12345, then I want output of 5 (5 digits in the string)

Answer 9

Tomiwa Joseph can you explain that code to me a bit more?

Answer 10

Use
length();
function

Answer 11

Lothar thank you!

Answer 12

Use isnum func

Answer 13

Use isnum func in for loop....

Answer 14

Чэйф

Answer 15

VAMSI oh OK thanks!

Answer 16

Спасибо!!!, только я не помню этого вопроса.