Python: Create a given flat list of all the keys in a flat dictionary
Python List: Exercise - 258 with Solution
Write a Python program to create a given flat list of all the keys in a flat dictionary.
- Use dict.keys() to return the keys in the given dictionary.
- Return a list() of the previous result.
Sample Solution:
Python Code:
def keys_only(students):
return list(students.keys())
students = {
'Laura': 10,
'Spencer': 11,
'Bridget': 9,
'Howard ': 10,
}
print("Original directory elements:")
print(students)
print("\nFlat list of all the keys of the said dictionary:")
print(keys_only(students))
Sample Output:
Original directory elements: {'Laura': 10, 'Spencer': 11, 'Bridget': 9, 'Howard ': 10} Flat list of all the keys of the said dictionary: ['Laura', 'Spencer', 'Bridget', 'Howard ']
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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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