python – Improve the step variables between the functions

I'm pretty new to scripting, and here's my first code that I wrote. The purpose of the code is to extract a primary identification based on a secondary identification. I would appreciate some constructive criticism and aggressive checking. The codes work and do what they are supposed to do. But how can I make it more python? more passionate?

import codecs

import numpy as np
import pandas like pd


def import_file (path):
& # 39; & # 39; & # 39; import the .csv files as a panda data frame
Args:
path (csv file): take the path of the .csv file

Returns:
Returns a panda data frame
& # 39; & # 39; & # 39;
with codecs.open (path, "r", encoding = & # 39; utf-8 & # 39 ;, errors = & # 39; ignore & # 39;) as fdata:
df = pd.read_csv (fdata)
back df


def appends_address_before_name (file):
& # 39; & # 39; & # 39; Attach the address before the name ID name
Returns:
Returns the file, with the address attached to the name of the column.
& # 39; & # 39; & # 39;
case file['ID'] =[address+str(col)paracolenarchivo[address+str(col)forcolinfile[address+str(col)paracolenarchivo[address+str(col)forcolinfile['ID']]return file


def create_parent_name (file, column_name: str):
& # 39; & # 39; & # 39; This will create a parent name based on the ID column

Args:
File: Take the dataFrame created from the appends_address_before_name function

column_name: take the name of the column where the father's name is
will be extracted from. The logic is to divide it into the last point.
        [[parentname].[+ childname]]Returns:
Returns a panda data frame with a new column called parentID
& # 39; & # 39; & # 39;
case file['parentID'] = [
        x.rsplit('.', 1)[0] If & # 39;. & # 39; in x else x[:-1] for x in the file[column_name]
    ]return file


address = & # 39; New Jersey & # 39;
file_1 = import_file (r & # 39; C:  humans.csv & # 39;)
file_2 = appends_address_before_name (file = file_1)
file_3 = create_parent_name (file = file_2, & # 39; ID & # 39;)

print (file_3)

The entry C.V is a column of values ​​separated by decimal places such as the following

99.99.9
100.42.3

Also, it seems to me that the way I pass the variables between the functions at the end of the code seems quite basic and terrible. What can I improve in the previous code and how can I improve it?