﻿ Pandas Data Series: Convert Series of lists to one Series - w3resource # Python Pandas: Convert Series of lists to one Series

## Python Pandas: Data Series Exercise-10 with Solution

Write a Pandas program to convert Series of lists to one Series.

Sample Solution :

Python Code :

``````import pandas as pd
s = pd.Series([
['Red', 'Green', 'White'],
['Red', 'Black'],
['Yellow']])
print("Original Series of list")
print(s)
s = s.apply(pd.Series).stack().reset_index(drop=True)
print("One Series")
print(s)
``````

Sample Output:

```Original Series of list
0    [Red, Green, White]
1           [Red, Black]
2               [Yellow]
dtype: object
One Series
0       Red
1     Green
2     White
3       Red
4     Black
5    Yellow
dtype: object
```

Python Code Editor:

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## Python: Tips of the Day

Python: Membership Testing in a Collection

```>>> a = ('one', 'two', 'three', 'four', 'five')
>>> if 'one' in a:
...     print('The tuple contains one.')
...
The tuple contains one.
>>> b = {0: 'zero', 1: 'one', 2: 'two', 3: 'three'}
>>> if 2 in b.keys():
...     print('The dict has the key of 2.')
...
The dict has the key of 2.
```