a = 5.
if a == 1:
    print("a is 1, changing to 2")
    a = 2
print("finished")


b = [1, 2, 3]
2 in b
5 in b


for x in [3, 1.2, 'a']:
    print(x)


list(range(10))


list(range(3, 12))


list(range(2, 20, 2))


for x in range(1, 10):
    if x != 5 and x != 7:
        print(x)



a = 0
while a < 10:
     print(a)
     a += 1



a = 0
b = 1
while a < 100:
     print(a)
     c = a + b
     a = b
     b = c



z = 1 + 1j
while abs(z) < 100:
     print(z,abs(z))
     if z.imag < 0:
         break
     z = z**2 + 1



a = [1, 0, 2, 4]
for element in a:
     if element == 0:
         continue
     print(1. / element)



words = ('cool', 'powerful', 'readable')
for i in range(0, len(words)):
     print(i, words[i])



for index, item in enumerate(words):
     print(index, item)



fruits = ('apple', 'orange')
for word, fruit in zip(words, fruits):
     print(word, fruit)


l = []                      # create the list
for i in range(10):
    l.append(i**2)

l


l = [i**2 for i in range(10)]
l


print([i for i in range(20) if (i%2!=0) and (i%7!=0)])


print([(i if ((i%2!=0) and (i%7!=0)) else 0) for i in range(20)])