List comprehensions

numbers = []

for i in range(10):
    numbers.append(i)
print(numbers)

# numbers = [i for i in range(10)]
# print(numbers)

for i in range(10):
    print(i**2)

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

numbers = [i*i for i in range(10) if i %3==0 ]
print(numbers)

MyString = "hello"
MyList = []

for i in MyString:
    MyList.append(i)
print(MyList)

MyList = [i for i in MyString]
print(MyList)

years = [1983, 1999, 2008, 1956, 1986]
ages = [2020-i for i in years]
print(ages)

result = [i if i%2==0 else "TEK" for i in range(1,10)]
print(result)

result = []

for a in range(3):
    for b in range(3):
         result.append((a,b))

print(result)

result = [(a,b) for a in range(3) for b in range(3)]
print(result)