# Python – Convert Float String List to Float Values

• Last Updated : 03 Jul, 2020

Sometimes, while working with Python Data, we can have a problem in which we need to perform conversion of Float Strings to float values. This kind of problem is quite common in all domains and find application quite often. Let’s discuss certain ways in which this task can be performed.

Input : test_list = [‘8.6’, ‘4.6’]
Output : [8.6, 4.6]

Input : test_list = [‘4.5’]
Output : [4.5]

Method #1 : Using list comprehension + `float()`
The combination of above functions can be used to solve this problem. In this, we perform task of conversion using float() and list comprehension is used to perform iteration.

 `# Python3 code to demonstrate working of ``# Convert Float String List to Float Values``# Using float() + list comprehension`` ` `# initializing list``test_list ``=` `[``'87.6'``, ``'454.6'``, ``'9.34'``, ``'23'``, ``'12.3'``]`` ` `# printing original list ``print``(``"The original list : "` `+` `str``(test_list))`` ` `# Convert Float String List to Float Values``# Using float() + list comprehension``res ``=` `[``float``(ele) ``for` `ele ``in` `test_list]`` ` `# printing result ``print``(``"List after conversion : "` `+` `str``(res))`

Output :

```The original list : ['87.6', '454.6', '9.34', '23', '12.3']
List after conversion : [87.6, 454.6, 9.34, 23.0, 12.3]
```

Method #2 : Using `map() + float()`
The combination of above functions can also be used to solve this problem. In this, we perform the task of conversion using float and extension of conversion logic using map().

 `# Python3 code to demonstrate working of ``# Convert Float String List to Float Values``# Using map() + float()`` ` `# initializing list``test_list ``=` `[``'87.6'``, ``'454.6'``, ``'9.34'``, ``'23'``, ``'12.3'``]`` ` `# printing original list ``print``(``"The original list : "` `+` `str``(test_list))`` ` `# Convert Float String List to Float Values``# Using map() + float()``res ``=` `list``(``map``(``float``, test_list))`` ` `# printing result ``print``(``"List after conversion : "` `+` `str``(res))`

Output :

```The original list : ['87.6', '454.6', '9.34', '23', '12.3']
List after conversion : [87.6, 454.6, 9.34, 23.0, 12.3]
```

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