Answers for "List[int] python"

convert list into integer python

num = [1, 2, 3, 4]

s = [str(i) for i in num] # Converting integers into strings

result = str("".join(s)) # Join the string values into one string

print(result)

convert list of strings to int python

test_list = ['1', '4', '3', '6', '7'] 
  
# Printing original list 
print ("Original list is : " + str(test_list)) 
  
# using naive method to 
# perform conversion 
for i in range(0, len(test_list)): 
    test_list[i] = int(test_list[i]) 
      
  
# Printing modified list  
print ("Modified list is : " + str(test_list))

nums: List[int] in python function

from typing import List
Vector = List[float]

def scale(scalar: float, vector: Vector) -> Vector:
    return [scalar * num for num in vector]

# typechecks; a list of floats qualifies as a Vector.
new_vector = scale(2.0, [1.0, -4.2, 5.4])