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Pretty Python, let's promise to be together our whole life
Experienced Full Stack Software Engineer with 4+ Years of experience, proficient in Django and React, with expertise in Python, JavaScript and Typescript, also an author of Dev.Junction Blogs & YouTube Channel, expert in Python/Django, Rest Framework, ReactJS/NextJS and TypeScript, currently based in Pune, India.
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Improve the user experience and efficiency of your React app with these simple techniques.
if-else ternary operator:if 1==1 is True:
print(True)
else:
print(False)
# Output: True
Above code can be written as:
print (True) if (1==1 is True) else print (False)
# Output: True
string in one line:name = "VARUAG"
namel[::-1]
print(name)
# Output: 'GAURAV'
# Let's suppose filename is file.txt
print([print(line) for line in open("file.txt")])
*):a, *b = (1,2,3,4,5)
print(a)
# Output: 1
print(b)
# Output: [2, 3, 4, 5]
lambda function:def add(num1. num2) :
print(num1 + num2)
add(2+1)
# Output: 3
The above code can be converted into a lambda function as given below:
add = lambda num1, num2: print(num1 + num2)
add(2,3)
# Output: 3
lambda function:The example given in above point can be also written in the form of self calling lambda:
# Syntax:
(lambda arg: returned value)(arg)
(lambda num1, num2: print (num1 + num2))(2+1)
# Output: 3
list comprehension:nums = []
for number in range(1,5):
nums.append(number)
print(nums)
# Output: [1, 2, 3, 4]
Above code can be simplified into this:
nums = [n for n in range(1,5)]
print(nums)
# Output: [1, 2, 3, 4]
dictionary comprehensionfruits_list = ['mango', 'apple']
fruits_dict = {}
for fruit in fruits_list:
fruits_dict[fruit] = fruit.upper()
print (fruits_dict)
# Output: {'mango': 'MANGO', 'apple': 'APPLE'}
The above code can be simplified into this:
fruits_list = ['mango', 'apple']
fruits_dict = {fruit: fruit.upper() for fruit in fruits_list}
print(fruits_dict)
# Output: {'mango': 'MANGO', 'apple': 'APPLE'}
generator expression:def fruit_generator():
fruits = ['mango', 'apple', 'banana']
for f in fruits:
yield f
gen=fruit_generator()
next(gen)
# Output: 'mango'
next (gen)
# Output: 'apple'
next (gen)
# Output: 'banana'
The above function code can be written with just a single line:
gen = (f for f in ['mango', 'apple', 'banana'])
next(gen)
# Output: 'mango'
next (gen)
# Output: 'apple'
next (gen)
# Output: 'banana'
lambda:# Factorial function using lambda function
fact = lambda n: 1 if n<1 else n * fac(n-1)
That’s it for today.
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