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Essential Python Tips And Tricks For Programmers

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Python is one of the most preferred languages out there. Its brevity and high readability makes it so popular among all programmers. So here are few of the tips and tricks you can use to bring up your Python programming game. 1. In-Place Swapping Of Two Numbers. 

Python3




x, y = 10, 20
print(x, y)
x, y = y, x
print(x, y)


Output:

10 20
20 10

2. Reversing a string in Python 

Python3




a = "GeeksForGeeks"
print("Reverse is", a[::-1])


Output:

Reverse is skeeGroFskeeG

3. Create a single string from all the elements in list 

Python3




a = ["Geeks", "For", "Geeks"]
print(" ".join(a))


Output:

Geeks For Geeks

4. Chaining Of Comparison Operators. 

Python3




n = 10
result = 1 < n < 20
print(result)
result = 1 > n <= 9
print(result)


Output:

True
False

4. Print The File Path Of Imported Modules. 

Python3




import os
import socket
 
print(os)
print(socket)


Output:

<module 'os' from '/usr/lib/python3.5/os.py'>
<module 'socket' from '/usr/lib/python3.5/socket.py'>

5. Use Of Enums In Python. 

Python3




class MyName:
    Geeks, For, Geeks = range(3)
 
print(MyName.Geeks)
print(MyName.For)
print(MyName.Geeks)


Output:

2
1
2

6. Return Multiple Values From Functions. 

Python3




def x():
    return 1, 2, 3, 4
a, b, c, d = x()
 
print(a, b, c, d)


Output:

1 2 3 4

7. Find The Most Frequent Value In A List. 

Python3




test = [1, 2, 3, 4, 2, 2, 3, 1, 4, 4, 4]
print(max(set(test), key = test.count))


Output:

4

8. Check The Memory Usage Of An Object. 

Python3




import sys
x = 1
print(sys.getsizeof(x))


Output:

28

9. Print string N times. 

Python3




n = 2
a = "GeeksforGeeks"
print(a * n)


Output:

GeeksforGeeksGeeksforGeeks

10. Checking if two words are anagrams 

Python3




from collections import Counter
def is_anagram(str1, str2):
     return Counter(str1) == Counter(str2)
 
# or without having to import anything
def is_anagram(str1, str2):
    return sorted(str1) == sorted(str2)
 
print(is_anagram('geek', 'eegk'))
print(is_anagram('geek', 'peek'))   


Output:

True
False

11. Sorting the dictionary according to key and value

Python3




x={1:3,4:2,5:1,2:9}
#sorting the dictionary according to value
print(sorted(x.items(),key=lambda a:a[1]))
#sorting the dictionary according to key
print(sorted(x.items(),key=lambda a:a[0]))


References: 1.10 Neat Python Tricks Beginners Should Know 2.30 Essential Python Tips And Tricks For Programmers


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