Amazing hacks of Python
Last Updated :
13 Sep, 2023
Python is indeed one of the smart and most trending languages. Here are some cool hacks that make python superb among all other languages.
- List comprehensions: List comprehension is the best and efficient technique to get rid of writing unnecessary lines of code. Read Article to know more.
- Printing a list: The list is not printed according to the user’s requirement. They are always printed in unwanted square brackets and single quotes. But there is a trivial solution to print the list efficiently by using the string’s join method.
The join method turns the list into a string by casting each item into a string and connecting them with the string that joins was called on.
Python
geek = ['Geeks', 'Programming', 'Algorithm', 'Article']
print ("Simple List:", geek)
print ('List by using join method: %s' % ', ' .join(geek))
print ('Direct apply the join method:',(", " .join(geek)))
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Output:
Simple List: ['Geeks', 'Programming', 'Algorithm', 'Article']
List by using join method: Geeks, Programming, Algorithm, Article
Direct apply the join method: Geeks, Programming, Algorithm, Article
Cool Zip tricks
- Transpose a matrix: You can Read Here about this.
- Partition a list into N groups: We used iter() as an iterator over a sequence.
Python3
geek = ['Sun', 'Flowers', 'Peoples', 'Animals', 'Day', 'Night']
partition = list(zip (*[iter(geek)] * 2))
print (partition)
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Output:
[('Sun', 'Flowers'), ('Peoples', 'Animals'), ('Day', 'Night')]
Explanation: [iter(geek)] * 2 produces a list containing 2 items of geek[] list, i.e. a list of length 2. *arg unpacks a sequence into arguments for a function call. Therefore we are passing the same iterator 2 times to zip().
- Printing more than one list’s items simultaneously
Python
list1 = [1, 3, 5, 7]
list2 = [2, 4, 6, 8]
for a, b in zip(list1,list2):
print (a, b)
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Output:
1 2
3 4
5 6
7 8
- Take the string as input and convert it into the list:
Python3
formatted_list = list(map(int, input().split()))
print(formatted_list)
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Input:
2 4 5 6
Output:
[2, 4, 5, 6]
- Convert the list of list into a single list
Python3
import itertools
geek = [[1, 2], [3, 4], [5, 6]]
lst = list(itertools.chain.from_iterable(geek))
print(lst)
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Output:
[1, 2, 3, 4, 5, 6]
- Printing the repeated characters: The task is to print the pattern like this Geeeeekkkkss. So we can easily print this pattern without using it for a loop.
Python
print ("G" + "e"*5 + "k"*4 + "s"*2)
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Output:
Geeeeekkkkss
Read More: 10 interesting facts about Python
Reference: https://www.quora.com/What-are-some-cool-Python-tricks
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