# Sum of list (with string types) in Python

In Python, type of behavior will not change for data type. Below example is list containing integer type in string.so, we have to take all int type numbers from list even it is declared in string.

Examples:

```Input : list1 = [12, 'geek', 2, '41', 'for', 10, '8', 6, 4, 'geeks', 7, '10']
Output : 100

Input : list1 = [100, 'geek', 200, '400', 'for', 101, '2018',
64, 74, 'geeks', 27, '7810']
Output :10794
```

We use type() in Python and isdigit() in Python to achieve this.

 `# Python program to find sum of list with different ` `# types. ` ` `  `def` `calsum(l): ` ` `  `    ``# returning sum of list using List comprehension ` `    ``return`  `sum``([``int``(i) ``for` `i ``in` `l ``if` `type``(i)``=``=` `int` `or` `i.isdigit()]) ` ` `  `# Declaring list ` `list1 ``=` `[``12``, ``'geek'``, ``2``, ``'41'``, ``'for'``, ``10``, ``'8'``, ``6``, ``4``, ``'geeks'``, ``7``, ``'10'``] ` `list2 ``=` `[``100``, ``'geek'``, ``200``, ``'400'``, ``'for'``, ``101``, ``'2018'``, ``64``, ``74``, ``'geeks'``, ``27``, ``'7810'``] ` ` `  `# Result of sum of list ` `print` `calsum(list1) ` `print` `calsum(list2) `

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