Pandas: Filter by matching multiple values in a given dataframe
Pandas Filter: Exercise-17 with Solution
Write a Pandas program to filter those records where WHO region matches with multiple values (Africa, Eastern Mediterranean, Europe) 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
new_w_a_con = pd.read_csv('world_alcohol.csv')
print("World alcohol consumption sample data:")
print(new_w_a_con.head())
print("\nFilter by matching multiple values in a given dataframe:")
flt_wine = new_w_a_con["WHO region"].isin(["Africa", "Eastern Mediterranean", "Europe"])
print(new_w_a_con[flt_wine])
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]
Filter by matching multiple values in a given dataframe:
Year WHO region ... Beverage Types Display Value
2 1985 Africa ... Wine 1.62
6 1987 Africa ... Wine 0.13
7 1985 Africa ... Spirits 0.39
9 1984 Africa ... Other 6.10
10 1987 Africa ... Wine 0.20
13 1984 Eastern Mediterranean ... Other 0.00
15 1987 Africa ... Wine 0.07
17 1989 Africa ... Beer 2.23
18 1984 Europe ... Spirits 1.62
19 1984 Africa ... Beer 1.08
22 1984 Europe ... Spirits 2.67
23 1984 Europe ... Beer 0.44
24 1985 Africa ... Other NaN
25 1984 Eastern Mediterranean ... Other 0.00
26 1985 Europe ... Wine 1.36
27 1984 Eastern Mediterranean ... Beer 2.22
29 1986 Europe ... Other NaN
30 1986 Africa ... Other 4.48
32 1989 Africa ... Beer 1.60
33 1985 Africa ... Other 0.00
34 1986 Europe ... Wine 0.80
36 1987 Eastern Mediterranean ... Beer 0.07
37 1986 Europe ... Beer 3.04
38 1987 Eastern Mediterranean ... Other 0.00
39 1987 Africa ... Spirits 0.01
40 1987 Europe ... Spirits 1.90
41 1986 Europe ... Beer 6.82
42 1984 Europe ... Spirits 3.06
44 1985 Europe ... Other NaN
45 1989 Africa ... Beer 0.19
.. ... ... ... ... ...
63 1985 Eastern Mediterranean ... Other 0.00
65 1989 Eastern Mediterranean ... Beer 0.00
66 1987 Eastern Mediterranean ... Wine 0.01
67 1989 Africa ... Beer 0.00
68 1989 Africa ... Beer 0.12
69 1986 Africa ... Spirits 0.42
70 1986 Africa ... Spirits 1.02
71 1985 Africa ... Other 0.57
72 1987 Africa ... Other 0.00
73 1986 Eastern Mediterranean ... Other 0.01
75 1989 Eastern Mediterranean ... Other 0.00
76 1985 Africa ... Beer 0.02
77 1985 Africa ... Spirits 0.01
79 1989 Europe ... Other 2.09
80 1985 Africa ... Other 0.84
81 1985 Europe ... Wine 2.54
82 1987 Europe ... Spirits 2.25
83 1986 Europe ... Other NaN
85 1985 Africa ... Wine 0.01
87 1989 Eastern Mediterranean ... Wine 0.01
88 1987 Eastern Mediterranean ... Beer 0.42
89 1986 Eastern Mediterranean ... Wine 0.70
90 1989 Africa ... Wine 0.01
91 1989 Europe ... Beer 4.43
92 1986 Africa ... Spirits 0.00
93 1987 Africa ... Other NaN
94 1985 Europe ... Spirits 3.06
95 1984 Africa ... Other 0.00
96 1985 Europe ... Wine 7.38
98 1984 Africa ... Wine 0.00
[69 rows x 5 columns]
Click to download world_alcohol.csv
Python Code Editor:
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Find current directory and file's directory:
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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")
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