How do I parse a string to a float or int?

floating-point integer parsing python type-conversion

Karl Knechtel

edited 11 Sep, 2022

Tristan Havelick

asked 19 Dec, 2008

How can I convert a str to float?
```
"545.2222"  →  545.2222
```
How can I convert a str to int?
```
"31"        →  31
```

_{For the reverse, see Convert integer to string in Python and Converting a float to a string without rounding it.}

_{Please instead use How can I read inputs as numbers? to close duplicate questions where OP received a string from user input and immediately wants to convert it, or was hoping for input (in 3.x) to convert the type automatically.}

Answer

>>> a = "545.2222"
>>> float(a)
545.22220000000004
>>> int(float(a))
545

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Answer