# Python | Convert given list into nested list

Some times, we come over the data that is in string format in a list and it is required to convert it into a list of the list. This kind of problem of converting a list of strings to nested list is quite common in web development. Let’s discuss certain ways in which this can be performed.

Method #1: Using iteration

 `# Python code to convert list  ` `# of string into list of list ` ` `  `# List initialization ` `Input` `=` `[``'Geeeks, Forgeeks'``, ``'65.7492, 62.5405'``, ` `         ``'Geeks, 123'``, ``'555.7492, 152.5406'``] ` `          `  `temp ``=` `[] ` ` `  `# Getting elem in list of list format ` `for` `elem ``in` `Input``: ` `    ``temp2 ``=` `elem.split(``', '``) ` `    ``temp.append((temp2)) ` ` `  `# List initialization ` `Output ``=` `[]  ` ` `  `# Using Iteration to convert  ` `# element into list of list ` `for` `elem ``in` `temp: ` `    ``temp3 ``=` `[] ` `    ``for` `elem2 ``in` `elem: ` `        ``temp3.append(elem2) ` `    ``Output.append(temp3) ` ` `  `# printing ` `print``(Output) `

Output:

[[‘Geeeks’, ‘Forgeeks’], [‘65.7492’, ‘62.5405’], [‘Geeks’, ‘123’], [‘555.7492’, ‘152.5406’]]

Method #2 : Using `ast ` [list with numeric values]

 `# Python code to convert list  ` `# of string into list of list ` ` `  `# importing ` `import` `ast ` ` `  `# List Initialization ` `Input` `=` `[``'12, 454'``, ``'15.72, 82.85'``, ``'52.236, 25256'``, ``'95.9492, 72.906'``] ` ` `  `# using ast to convert ` `Output ``=` `[``list``(ast.literal_eval(x)) ``for` `x ``in` `Input``] ` ` `  `# printing ` `print``(Output) `

Output:

[[12, 454], [15.72, 82.85], [52.236, 25256], [95.9492, 72.906]]

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