Python: Split a given dictionary of lists into list of dictionaries using map function
Python map: Exercise-15 with Solution
Write a Python program to split a given dictionary of lists into list of dictionaries using map function.
Sample Solution:
Python Code:
def list_of_dicts(marks):
result = map(dict, zip(*[[(key, val) for val in value] for key, value in marks.items()]))
return list(result)
marks = {'Science': [88, 89, 62, 95], 'Language': [77, 78, 84, 80]}
print("Original dictionary of lists:")
print(marks)
print("\nSplit said dictionary of lists into list of dictionaries:")
print(list_of_dicts(marks))
Sample Output:
Original dictionary of lists: {'Science': [88, 89, 62, 95], 'Language': [77, 78, 84, 80]} Split said dictionary of lists into list of dictionaries: [{'Science': 88, 'Language': 77}, {'Science': 89, 'Language': 78}, {'Science': 62, 'Language': 84}, {'Science': 95, 'Language': 80}]
Python Code Editor:
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Previous: Write a Python program to interleave two given list into another list randomly using map() function.
Next: Write a Python program to convert a given list of strings into list of lists using map function.
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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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