Python: Find the difference between two list including duplicate elements
Python List: Exercise - 134 with Solution
Write a Python program to find the difference between two list including duplicate elements.
Sample Solution:
Python Code:
def list_difference(l1,l2):
result = list(l1)
for el in l2:
result.remove(el)
return result
l1 = [1,1,2,3,3,4,4,5,6,7]
l2 = [1,1,2,4,5,6]
print("Original lists:")
print(l1)
print(l2)
print("\nDifference between two said list including duplicate elements):")
print(list_difference(l1,l2))
Sample Output:
Original lists: [1, 1, 2, 3, 3, 4, 4, 5, 6, 7] [1, 1, 2, 4, 5, 6] Difference between two said list including duplicate elements): [3, 3, 4, 7]
Flowchart:
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Previous: Write a Python program to check common elements between two given list are in same order or not.
Next: Write a Python program to iterate over all pairs of consecutive items in a given list.
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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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