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Python | Check if a list exists in given list of lists
• Last Updated : 27 Mar, 2019

Given a list of lists, the task is to check if a list exists in given list of lists.

```Input :
lst = [[1, 1, 1, 2], [2, 3, 4], [1, 2, 3], [4, 5, 6]]
list_search = [4, 5, 6]

Output:  True

Input :
lst = [[5, 6, 7], [12, 54, 9], [1, 2, 3]]
list_search = [4, 12, 54]

Output:  False
```

Let’s discuss certain ways in which this task is performed.

Method #1: Using Counter
The most concise and readable way to find whether a list exists in list of lists is using Counter.

 `# Python code find whether a list ``# exists in list of list.``import` `collections`` ` `# Input List Initialization``Input` `=` `[[``1``, ``1``, ``1``, ``2``], [``2``, ``3``, ``4``], [``1``, ``2``, ``3``], [``4``, ``5``, ``6``]]`` ` `# List to be searched``list_search ``=` `[``2``, ``3``, ``4``]`` ` `# Flag initialization``flag ``=` `0` ` ` `# Using Counter``for` `elem ``in` `Input``:``    ``if` `collections.Counter(elem) ``=``=` `collections.Counter(list_search) :``        ``flag ``=` `1``     ` `# Check whether list exists or not.    ``if` `flag ``=``=` `0``:``    ``print``(``"False"``)``else``:``    ``print``(``"True"``)`
Output:
```True
```

Method #2: Using in

 `# Python code find whether a list ``# exists in list of list.`` ` `# Input List Initialization``Input` `=` `[[``1``, ``1``, ``1``, ``2``], [``2``, ``3``, ``4``], [``1``, ``2``, ``3``], [``4``, ``5``, ``6``]]`` ` `# List to be searched``list_search ``=` `[``1``, ``1``, ``1``, ``2``]`` ` `# Using in to find whether ``# list exists or not``if` `list_search ``in` `Input``:``    ``print``(``"True"``)``else``:``    ``print``(``"False"``)`
Output:
```True
```

Method #3: Using `any`

 `# Python code find whether a list ``# exists in list of list.`` ` `# Input List Initialization``Input` `=` `[[``1``, ``1``, ``1``, ``2``], [``2``, ``3``, ``4``], [``1``, ``2``, ``3``], [``4``, ``5``, ``6``]]`` ` `# List to be searched``list_search ``=` `[``4``, ``5``, ``6``]`` ` `# Using any to find whether ``# list exists or not``if` `any``(``list` `=``=` `list_search ``for` `list` `in` `Input``):``    ``print``(``"True"``)``else``:``    ``print``(``"False"``)``    `
Output:
```True
```

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