There are many methods to get integer form string, so in this post, we'll learn how to get int from str, the first method is using Regex and the second is using isdigit() built-function
1. Getting integer from string by using regex (method #1)
import re #string string = "hello my name is Mark i'm 20 years old" #search # "/d" = Returns a match where the string contains digits (numbers from 0-9) # "+" = One or more occurrences search = re.search("\d+", string).group() #print print(search)
Example 2: finding all integers in a string
if you want to get all integers from string you need to user "findall()"
#string string = "hello my name is Mark i'm 20 years old. i have 300 cats" #findall integers ["20" and "300"] find_all = re.findall("\d+", string) #print results print(find_all)
as you can see, we have got all integers as list
2. Getting integer from string by using isdigit() built-function (method #2)
How this method works ?
first we'll spilt the string then check item by item if is a string
test_string = "Hello my name is Mark i'm 20 years old. i have 300 cats" split_string = test_string.split() #split str into list our_integers =  for i in split_string: if i.isdigit(): our_integers.append(i) print(our_integers)
let's rewrite the above example with the sort code [good code]
test_string = "Hello my name is Mark i'm 20 years old. i have 300 cats" our_interegs = [i for i in test_string.split() if i.isdigit()] print(our_interegs)
in this article, we've learned two methods to get number from string, Regex, and isdigit() built-function, as far as I know, the second method is more expensive than the first method
English today is not an art to be mastered it's just a tool to use to get a result