Python: Get numbers divisible by fifteen from a list using an anonymous function

Last update on May 28 2022 13:00:46 (UTC/GMT +8 hours)

Python Basic: Exercise-110 with Solution

Write a Python program to get numbers divisible by fifteen from a list using an anonymous function.

Sample Solution-1:

Python Code:

num_list = [45, 55, 60, 37, 100, 105, 220]
# use anonymous function to filter
result = list(filter(lambda x: (x % 15 == 0), num_list))
print("Numbers divisible by 15 are",result)

Sample Output:

Numbers divisible by 15 are [45, 60, 105]

Flowchart:

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Sample Solution-2:

Python Code:

num_list = [45, 55, 60, 37, 100, 105, 220]
print("Original list:",num_list)
# use anonymous function to filter
result = list(filter(lambda x: (x % 15 == 0), num_list))
print("Numbers of the said list divisible by 15 are:",result)

Sample Output:

Original list: [45, 55, 60, 37, 100, 105, 220]
Numbers of the said list divisible by 15 are: [45, 60, 105]

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Sample Solution-3:

Python Code:

num_list = [45, 55, 60, 37, 100, 105, 220]
print("Original list:",num_list)
print("\nNumbers of the said list divisible by 15 are:")
print(str(''.join(filter(lambda x: x, str(list([i for i in num_list if i % 15 == 0]))))))

Sample Output:

Original list: [45, 55, 60, 37, 100, 105, 220]

Numbers of the said list divisible by 15 are:
[45, 60, 105]

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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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