Python: Chunk a given list into smaller lists of a specified size
Python List: Exercise - 232 with Solution
Write a Python program to chunk a given list into smaller lists of a specified size.
- Use list() and range() to create a list of the desired size.
- Use map() on the list and fill it with splices of the given list.
- Finally, return the created list.
Sample Solution:
Python Code:
from math import ceil
def chunk_list(lst, size):
return list(
map(lambda x: lst[x * size:x * size + size],
list(range(ceil(len(lst) / size)))))
print(chunk_list([1, 2, 3, 4, 5, 6, 7, 8], 3))
Sample Output:
[[1, 2, 3], [4, 5, 6], [7, 8]]
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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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