PYTHON

list comprehension

# List comprehension 

        
list_comp = [i+3 for i in range(20)]

# above code is similar to 

for i in range(20):
	print(i + 3)

List Comprehension

# Python program to demonstrate list
# comprehension in Python
   
# below list contains square of all
# odd numbers from range 1 to 10
odd_square = [x ** 2 for x in range(1, 11) if x % 2 == 1]
print (odd_square)

list comprehension

list = [[2,4,6,8]]
matrix = [[row[i] for row in list] for i in range(4)]
print(matrix)

list comprehension

1
x=[i for i in range(5)]

list comprehension in python

# List Comprehension

# If one variable
power = [x**2 for x in range(1, 10)] 
# If need two variables especially
# when you work Dictionary with List Comprehension.
# create a simple (key, value), tuple for context variables x and y
l_Comp = [(x,y) for x, y in employees.items() if y >= 100000]

list comprehension

[expr for val1 in collection1 and val2 collection2 if(condition)]

list comprehension

[col for col in df.columns]

List Comprehension simple example

# for understanding, above generation is same as,
odd_square = []
 
for x in range(1, 11):
    if x % 2 == 1:
        odd_square.append(x**2)
 
print (odd_square)