Program 1

Program for copying prime numbers from a list to a new list

 def primechk(n):

    t = 0 # Used for storing factors

    for i in range(1,n+1):

        if n % i == 0:

            t+=1

    return True if t==2 else False

x1= [90,50,79,88,39,61,89,111,139]

x2=[]

for i in x1:

    y = primechk(i)

    if y == True:

        x2.append(i)

    else:

        pass

print(x1)

print(x2)