Python: Filter even numbers from a given dictionary values
Python dictionary: Exercise-57 with Solution
Write a Python program to filter even numbers from a given dictionary values.
Sample Solution:
Python Code:
def test(dictt):
result = {key: [idx for idx in val if not idx % 2]
for key, val in dictt.items()}
return result
students = {'V' : [1, 4, 6, 10], 'VI' : [1, 4, 12], 'VII' : [1, 3, 8]}
print("\nOriginal Dictionary:")
print(students)
print("Filter even numbers from said dictionary values:")
print(test(students))
students = {'V' : [1, 3, 5], 'VI' : [1, 5], 'VII' : [2, 7, 9]}
print("\nOriginal Dictionary:")
print(students)
print("Filter even numbers from said dictionary values:")
print(test(students))
Sample Output:
Original Dictionary: {'V': [1, 4, 6, 10], 'VI': [1, 4, 12], 'VII': [1, 3, 8]} Filter even numbers from said dictionary values: {'V': [4, 6, 10], 'VI': [4, 12], 'VII': [8]} Original Dictionary: {'V': [1, 3, 5], 'VI': [1, 5], 'VII': [2, 7, 9]} Filter even numbers from said dictionary values: {'V': [], 'VI': [], 'VII': [2]}
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Previous: Write a Python program to convert a given dictionary into a list of lists.
Next: Write a Python program to get all combinations of key-value pairs in a given dictionary.
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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
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