This is an Object - Code interpretation

[snippsat]

I am trying to gain a better understanding of object orientation programming.

Pandas is maybe not the best to look at as it really big and dos a lot specialization.
Yoriz explain it fine.

Normally so would read_csv() by a method of the class,pandas just write it as a function,
then has special @Appender decorator.

@Appender(
    _doc_read_csv_and_table.format(
        func_name="read_csv",
        summary="Read a comma-separated values (csv) file into DataFrame.",
        _default_sep="','",
        storage_options=generic._shared_docs["storage_options"],
    )
)
def read_csv(
    filepath_or_buffer: FilePathOrBuffer,
    sep=lib.no_default,
    delimiter=None,
    # Column and Index Locations and Names
    header="infer",
    .....ect

---

If i gone write a demo as more normal OOP class way.

# my_pandas.py
class MyPandas:
    def read_csv(self, file):
        with open(file) as f:
            print(f.read())

    def head(self, file):
        with open(file) as f:
            print(f.read()[:20])

Use:

>>> import my_pandas as pd
>>>
>>> df = pd.MyPandas()
>>> df.read_csv('Articles.csv')
name;regcode;number
Salah;111;22
ali;222;33
Ranard;333;44
>>>
>>> df.head('Articles.csv')
name;regcode;number

You see the similarity way of usage now is read_csv() and head() methods of class MyPandas.
They are not function as pandas use in there specialization way.