Skull,

It looks like I need to do a another read of Panda, from scratch (most likely I would have covered it and forgotten)

Please allow me to breakdown the code into small bits and start

I take the below code:

series={'index':[0,1,2,3],'data':[145,142,38,13],'name':'Songs'}

In the above code:

Q1) What does series represent (a variable???)

Q2) What does index represent?

Q3) what does data represent?

Q4) purpose of including 'name':'Songs'

Understood your below explanation:

index() is a builtin function of the series['index'] list that returns the index of the passed element

I have gone through the below page:

https://www.w3schools.com/python/trypython.asp?filename=demo_ref_list_index2

Thank you for the above explanation

Q5) can you please help me understand what does “series['index']” in value_idx=series['index'].index(idx) represent?

Q6) In the below picture, the argument and parameter are same. My question is if only one Series is provided, do we need to include this in the function defition    “ def get(series, idx):”?

I can understand if a lot of similar such data is provided , then I need to tell the function which data (here ‘series’) it should take.

Kindly help/guide me.

Thank you

pepr,

Thank you for the detailed explanation.

I have gone through __getitem__ dunder method. I have a few questions on the code I have chosen. I will raise another questionn.

The word is appearing in many places and I am not clear. So to get a better understanding I have replaced ‘index’ with ‘Botox’ and below are the results (something need fix in the code):

series1={'Botox':[0,1,2,3],'data':[145,142,38,13],'name':'Songs'}

def get(series1,idx):
   value_idx=series1['Botox'].Botox(idx)
   return series1['data'][value_idx]

get(series1,1)

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Output:

I then changed Botox(idx) to index(idx) which is a built-in python method

series1={'Botox':[0,1,2,3],'data':[145,142,38,13],'name':'Songs'}

def get(series1,idx):
   value_idx=series1['Botox'].index(idx)
   return series1['data'][value_idx]

get(series1,1)

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Output:

Hope, my understanding is correct now.

Kindly add any further info/reading required in this context.

Thank you

pepr, 

any thoughts on the reason/purpose of including: 'name':'Songs'

series={'index':[0,1,2,3],'data':[145,142,38,13],'name':'Songs'}

This property or similar type of code is appearing in all examples in Serialisation topic in Pandas 2 book (Harrison, Matt. Effective Pandas 2: Opinionated Patterns for Data Manipulation:)

I am not sure, what I will miss if I do not understand this aspect.

Here is the text given above the code

The dictionary, series, has a list of the data points stored under the 'data' key. In addition to an entry in the dictionary for the actual data, there is an explicit entry for the corresponding index values for the data (in the 'index' key), as well as an entry for the name of the data (in the 'name' key):

pepr, 

Understood the recent comment.

This bit is bothering me to proceed. How this field is useful either from logic or from programmng perspective?