QST: Is Series in pandas size mutable?
### 

- [X] I have searched the [[pandas] tag](https://stackoverflow.com/questions/tagged/pandas) on StackOverflow for similar questions.

- [X] I have asked my usage related question on [StackOverflow](https://stackoverflow.com).


### Link to question on StackOverflow

https://stackoverflow.com/questions/69555071/is-series-size-mutable

### Question about pandas

>>>s
a    4.0
b    4.0
c    8.0
d    9.0
f    NaN
dtype: float64`>>>s
a    4.0
b    4.0
c    8.0
d    9.0
f    NaN
dtype: float64
>>>s.shape
(5,)
s.drop('f',inplace=True)
>>> s
a    4.0
b    4.0
c    8.0
d    9.0
dtype: float64
>>> s.size
4
>>> s['f']=9
>>> s
a    4.0
b    4.0
c    8.0
d    9.0
f    9.0
dtype: float64
>>> s['b']=100
>>> s
a      4.0
b    100.0
c      8.0
d      9.0
f      9.0
dtype: float64
>>> s['g']=200
>>> s.size
6
Please go through the above Python commands that imply that Pandas Series are also size mutable. The size of given series is initially 5 
Then I delete one element s.drop('f',inplace=True), so the size of the Series will be 4. 
Then I again assign a new variable s['f']=9 and s['g']=200, then the size of the Series is 6 now. It means Series is also size mutable.