# Python | Remove element from given list containing specific digits

Given a list, the task is to remove all those elements from list which contains the specific digits.

Examples:

```Input: lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 13, 15, 16]
no_delete = ['2', '3', '4', '0']
Output: [1, 5, 6, 7, 8, 9, 11, 15, 16]
Explanation:
Numbers 2, 3, 4, 10, 12, 13, 14 contains digits
from no_delete, therefore remove them.

Input: lst = [1, 2, 3, 4, 5, 6, 7, 8, 13, 15, 16]
no_delete = {'6', '5', '4', '3'}
Output: [1, 2, 7, 8, 9, 10, 11, 12]
Explanation:
Numbers 3, 4, 5, 6, 13, 14, 15, 16 contains digits
from no_delete, therefore remove them.
```

Below are some methods to do the task.

Method #1: Using Iteration

 `# Python code to remove all those elements  ` `# from list which contains certain digits ` ` `  `# Input List Initialisation ` `Input` `=` `[``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``7``, ``8``, ``9``, ``10``, ``11``, ``12``, ``14``, ``13``, ``15``, ``16``] ` ` `  `# Numbers to delete ` `no_delete ``=` `[``1``, ``0``] ` ` `  `# Output List Initialisation ` `Output ``=` `[] ` ` `  `# Using iteration to remove all the elements  ` `for` `elem ``in` `Input``: ` `    ``flag ``=` `1` `    ``temp ``=` `elem ` `    ``while` `elem > ``0``: ` `        ``rem ``=` `elem ``%` `10` `        ``elem ``=` `elem``/``/``10` `        ``if` `rem ``in` `no_delete: ` `            ``flag ``=` `0` `    ``if` `flag ``=``=` `1``: ` `        ``Output.append(temp) ` ` `  `# Printing Output  ` `print``(``"Intial list is :"``, ``Input``) ` `print``(``"Delete list :"``, no_delete) ` `print``(``"List after removing elements is :"``, Output) `

Output:

```Intial list is : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 13, 15, 16]
Delete list : [1, 0]
List after removing elements is : [2, 3, 4, 5, 6, 7, 8, 9]
```

Method #2: Using List comprehension and any() function

 `# Python code to remove all those elements from list  ` `# which contains certain digits ` ` `  `# Input List Initialisation ` `Input` `=` `[``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``7``, ``8``, ``9``, ``10``, ``11``, ``12``, ``14``, ``13``, ``15``, ``16``] ` ` `  `# Numbers to delete ` `no_delete ``=` `[``'2'``, ``'3'``, ``'4'``, ``'0'``] ` ` `  `# using list comprehension and any() ` `Output ``=` `[a ``for` `a ``in` `Input` `if` `not`  `          ``any``(b ``in` `no_delete ``for` `b ``in` `str``(a))] ` ` `  `# Printing Output  ` `print``(``"Intial list is :"``, ``Input``) ` `print``(``"Delete list :"``, no_delete) ` `print``(``"List after removing elements is :"``, Output) `

Output:

```Intial list is : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 13, 15, 16]
Delete list : ['2', '3', '4', '0']
List after removing elements is : [1, 5, 6, 7, 8, 9, 11, 15, 16]
```

Method #3: Using List comprehension and set()

 `# Python code to remove all those elements from list  ` `# which contains certain digits ` ` `  `# Input List Initialisation ` `Input` `=` `[``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``7``, ``8``, ``9``, ``10``, ``11``, ``12``, ``14``, ``13``, ``15``, ``16``] ` ` `  `# Numbers to delete ` `no_delete ``=` `{``'6'``, ``'5'``, ``'4'``, ``'3'``} ` ` `  `# Using list comprehension and set ` `Output ``=` `[x ``for` `x ``in` `Input` `         ``if` `not` `no_delete & ``set``(``str``(x))] ` ` `  `# Printing Output  ` `print``(``"Intial list is :"``, ``Input``) ` `print``(``"Delete list :"``, no_delete) ` `print``(``"List after removing elements is :"``, Output) `

Output:

```Intial list is : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 13, 15, 16]
Delete list : {'3', '4', '6', '5'}
List after removing elements is : [1, 2, 7, 8, 9, 10, 11, 12]
```

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