Pandas SQL Query: Display the name, salary and department number for those employees whose first name ends with the letter 'm'

Last update on May 28 2022 13:37:57 (UTC/GMT +8 hours)

Pandas HR database Queries: Exercise-15 with Solution

Write a Pandas program to display the first name, last name, salary and department number for those employees whose first name ends with the letter 'm'.

EMPLOYEES.csv

Sample Solution :

Python Code :

import pandas as pd
employees = pd.read_csv(r"EMPLOYEES.csv")
departments = pd.read_csv(r"DEPARTMENTS.csv")
job_history = pd.read_csv(r"JOB_HISTORY.csv")
jobs = pd.read_csv(r"JOBS.csv")
countries = pd.read_csv(r"COUNTRIES.csv")
regions = pd.read_csv(r"REGIONS.csv")
locations = pd.read_csv(r"LOCATIONS.csv")
print("First name       Last name      Salary    Department ID")
result = employees[employees['first_name'].str[-1]=='m']
for index, row in result.iterrows():
    print(row['first_name'].ljust(15),row['last_name'].ljust(15),str(row['salary']).ljust(9),row['department_id'])

Sample Output:

First name       Last name      Salary    Department ID
Adam            Fripp           8200      50.0
Payam           Kaufling        7900      50.0
William         Smith           7400      80.0
William         Gietz           8300      110.0

Click to view the table contain:

Python Code Editor:

Structure of HR database :

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Previous: Write a Pandas program to count the NaN values of all the columns of locations file.
Next: Write a Pandas program to display the first name, last name, salary and department number for those employees whose first name ends with the letter 'd' or 'n' or 's' and also arrange the result in descending order by department id.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

The os and os.path modules.
The __file__ constant
os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
os.path.dirname(path) (returns "the directory name of pathname path")
os.getcwd() (returns "a string representing the current working directory")
os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m