> For the complete documentation index, see [llms.txt](https://505684565.gitbook.io/python/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://505684565.gitbook.io/python/python-shu-ju-lei-xing-zhuan-huan.md).

# 10.Python数据类型转换

数据类型转换

## **Python数据类型转换**

有时候，我们需要对数据内置的类型进行转换，数据类型的转换，你只需要将数据类型作为函数名即可。

| **函数**                                                                            | **描述**                          |
| --------------------------------------------------------------------------------- | ------------------------------- |
| [int(x \[,base\])](http://www.runoob.com/python3/python-func-int.html)            | 将x转换为一个整数                       |
| [float(x)](http://www.runoob.com/python3/python-func-float.html)                  | 将x转换到一个浮点数                      |
| [complex(real \[,imag\])](http://www.runoob.com/python3/python-func-complex.html) | 创建一个复数                          |
| [str(x)](http://www.runoob.com/python3/python-func-str.html)                      | 将对象 x 转换为字符串                    |
| [repr(x)](http://www.runoob.com/python3/python-func-repr.html)                    | 将对象 x 转换为表达式字符串                 |
| [eval(str)](http://www.runoob.com/python3/python-func-eval.html)                  | 用来计算在字符串中的有效Python表达式,并返回一个对象   |
| [tuple(s)](http://www.runoob.com/python3/python3-func-tuple.html)                 | 将序列 s 转换为一个元组                   |
| [list(s)](http://www.runoob.com/python3/python3-att-list-list.html)               | 将序列 s 转换为一个列表                   |
| [set(s)](http://www.runoob.com/python3/python-func-set.html)                      | 转换为可变集合                         |
| [dict(d)](http://www.runoob.com/python3/python-func-dict.html)                    | 创建一个字典。d 必须是一个序列 (key,value)元组。 |
| [frozenset(s)](http://www.runoob.com/python3/python-func-frozenset.html)          | 转换为不可变集合                        |
| [chr(x)](http://www.runoob.com/python3/python-func-chr.html)                      | 将一个整数转换为一个字符                    |
| [ord(x)](http://www.runoob.com/python3/python-func-ord.html)                      | 将一个字符转换为它的整数值                   |
| [hex(x)](http://www.runoob.com/python3/python-func-hex.html)                      | 将一个整数转换为一个十六进制字符串               |
| [oct(x)](http://www.runoob.com/python3/python-func-oct.html)                      | 将一个整数转换为一个八进制字符串                |

示例：

```python
>>>aTest = '255'
>>>bTest = int(aTest)
>>>print(bTest)
>>>255
```