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Pandas Excel: Find a list of specified customers by name

Pandas: Excel Exercise-14 with Solution

Write a Pandas program to import given excel data (coalpublic2013.xlsx ) into a Pandas dataframe and find a list of specified customers by name. Go to Excel data

Sample Solution:

Python Code :

import pandas as pd
import numpy as np
df = pd.read_excel('E:\coalpublic2013.xlsx')    
df.query('Mine_Name == ["Shoal Creek Mine", "Piney Woods Preparation Plant"]').head()

Sample Output:

    Year  MSHA ID                      Mine_Name  Production  Labor_Hours
8   2013   102901               Shoal Creek Mine           0        12396
9   2013   102901               Shoal Creek Mine     1453024      1237415
18  2013   102976  Piney Woods Preparation Plant           0        14828
19  2013   102976  Piney Woods Preparation Plant           0        23193

Excel Data:

coalpublic2013.xlsx:


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Previous: Write a Pandas program to import given excel data (coalpublic2013.xlsx ) into a dataframe and find all records that include two specific MSHA ID.
Next: Write a Pandas program to import given excel data (employee.xlsx ) into a Pandas dataframe and find a list of employees where hire_date> 01-01-07.

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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