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Pandas: Filter all records starting from the 2nd row, access every 5th row from a given dataframe

Pandas Filter: Exercise-27 with Solution

Write a Pandas program to filter all records starting from the 2nd row, access every 5th row from world alcohol consumption dataset.

Test Data:

   Year       WHO region                Country Beverage Types  Display Value
0  1986  Western Pacific               Viet Nam           Wine           0.00
1  1986         Americas                Uruguay          Other           0.50
2  1985           Africa           Cte d'Ivoire           Wine           1.62
3  1986         Americas               Colombia           Beer           4.27
4  1987         Americas  Saint Kitts and Nevis           Beer           1.98   

Sample Solution:

Python Code :

import pandas as pd
# World alcohol consumption data
w_a_con = pd.read_csv('world_alcohol.csv')
print("World alcohol consumption sample data:")
print(w_a_con.head())
print("\nStarting from the 2nd row, access every 5th row:")
print(w_a_con.iloc[1::5].head(10))

Sample Output:

World alcohol consumption sample data:
   Year       WHO region      ...      Beverage Types Display Value
0  1986  Western Pacific      ...                Wine          0.00
1  1986         Americas      ...               Other          0.50
2  1985           Africa      ...                Wine          1.62
3  1986         Americas      ...                Beer          4.27
4  1987         Americas      ...                Beer          1.98

[5 rows x 5 columns]

Starting from the 2nd row, access every 5th row:
    Year             WHO region      ...      Beverage Types Display Value
1   1986               Americas      ...               Other          0.50
6   1987                 Africa      ...                Wine          0.13
11  1989               Americas      ...                Beer          0.62
16  1984               Americas      ...                Wine          0.06
21  1989               Americas      ...             Spirits          4.51
26  1985                 Europe      ...                Wine          1.36
31  1986        Western Pacific      ...                Wine          0.00
36  1987  Eastern Mediterranean      ...                Beer          0.07
41  1986                 Europe      ...                Beer          6.82
46  1987               Americas      ...             Spirits          2.26

[10 rows x 5 columns]

Click to download world_alcohol.csv

Python Code Editor:


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Previous: Write a Pandas program to filter all records starting from the 'Year' column, access every other column from world alcohol consumption dataset.

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Python: Tips of the Day

Merging two dicts in Python 3.5+ with a single expression

Example:

# How to merge two dictionaries
# in Python 3.5+

x = {'p': 1, 'q': 3}
y = {'q': 5, 'r': 8}

z = {**x, **y}

z
{'r': 4, 'p': 1, 'q': 3}

z = dict(x, **y)
print(z)

Output:

{'p': 1, 'q': 5, 'r': 8}