> For the complete documentation index, see [llms.txt](https://jen-hsuan-hsieh.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://jen-hsuan-hsieh.gitbook.io/python/chapter-2courses/21python-for-data-science-and-machine-learning-bootcamp/214python-for-data-analysis-pandas/2142series.md).

# 2.1.4.2.Series

* 使用library

```
import numpy as np
import pandas as pd
```

* pandas series可以接受兩個參數:
  * 第一個參數為數值的數列, 型別可以是ptyhon數列或是numpy數列
  * 第二個參數為label的數列, 型別可以是ptyhon數列或是numpy數列

    ```
    labels = ['a', 'b', 'c']
    my_data = [10, 20, 30]
    pd.Series(data = my_data)
    pd.Series(data = my_data, index=labels)

    arr = np.array(my_data)
    pd.Series(arr)
    pd.Series(arr, labels)

    #傳入function
    pd.Series(data = [sum, print, len])
    ```
  * 也可以直接傳入dictionary

    ```
    d = {'a':10, 'b':20, 'c': 30}
    pd.Series(d)
    ```