Basic use python + pytest (asserted)

The basic usage #pytest 
# installation: the install pytest PIP 
# run in the current directory: input pytest 

# 1. asserted 

# Function: for calculating the sum of a and b and 

DEF the Add (a, b): 
    return a + b 

# function: primes for determining 

DEF is_prime (n-): 
    IF n-<. 1: 
        return False 
    for I in Range (2, n-): 
        IF I n-% == 0: 
            return False 
        return True 

# test for equality 
DEF test_add_1 (): 
    Assert the Add (3,4-). 7 == 

# test unequal 
DEF test_add_2 (): 
    ! Assert the Add (17,22) = 50 

# test greater than or equal 
DEF test_add_3 (): 
    Assert the Add (17,22) <= 50 

# test less than or equal 
DEF test_add_4 (): 
    Assert the Add (17,22)> = 38 is 

# test comprising 
def test_in ():
    A = 'the Hello' 
    B = 'of He' 
    Assert B in A 

# test does not contain 
DEF test_not_in (): 
    A = 'the Hello' 
    B = 'Hi' 
    Assert B Not in A 

# determines whether the True 
DEF test_true_1 (): 
    Assert is_prime (13) 

# determines whether the True 
DEF test_true_2 (): 
    Assert is_prime (. 7) iS True 

# determines whether or not True 
DEF test_true_3 (): 
    Assert is_prime (. 4) 

# determines whether or not True 
DEF test_true_4 (): 
    Assert is_prime ( 6) iS not True 

# determine whether the False 
DEF test_false_1 (): 
    the Assert is_prime (8) iS False