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- print("***** FOR LOOP *****")
- for i in range(5):
- print(i)
- primes = [2, 3, 5, 7]
- for i in range(len(primes)):
- print("index %d " % primes[i])
- # ---------------- OUTPUT ----------------
- # ***** For loop *****
- # 0
- # 1
- # 2
- # 3
- # 4
- # index 2
- # index 3
- # index 5
- # index 7
- print("***** FOR LOOP USING STRING *****")
- hello_world = "Hello, World!"
- # print each character
- for ch in hello_world:
- print(ch);
- # count how many character using for loop
- length = 0
- for ch in hello_world:
- length += 1;
- print("number of characters %d " % length)
- # ---------------- OUTPUT ----------------
- # ***** FOR LOOP USING STRING *****
- # H
- # e
- # l
- # l
- # o
- # ,
- #
- # W
- # o
- # r
- # l
- # d
- # !
- # number of characters 13
- print("***** WHILE LOOP *****")
- square = 1
- # print 1 to 10
- while square <= 10:
- print(square)
- square += 1
- # print square 1 to 100 with power ** (1, 4, 16...)
- number = 1
- while square <= 99:
- square = number ** 2
- print("square %d" % square)
- number += 1
- # ---------------- OUTPUT ----------------
- # ***** WHILE LOOP *****
- # 1
- # 2
- # 3
- # 4
- # 5
- # 6
- # 7
- # 8
- # 9
- # 10
- # square 1
- # square 4
- # square 9
- # square 16
- # square 25
- # square 36
- # square 49
- # square 64
- # square 81
- # square 100
- print("***** BREAK *****")
- count = 0
- # logically this cannot be False
- while True:
- print(count)
- count += 1
- if count >= 5:
- # exit loop
- break
- zoo = ["lion", 'tiger', 'elephant']
- # logically this cannot be False
- while True:
- # pop: return last item in the list
- animal = zoo.pop()
- print(animal)
- if animal == "lion":
- break;
- # ---------------- OUTPUT ----------------
- # ***** BREAK *****
- # 0
- # 1
- # 2
- # 3
- # 4
- # elephant
- # tiger
- # lion
- print("***** CONTINUE *****")
- for i in range(5):
- if i == 3:
- # skip the rest of the code and move to the next loop
- continue
- print(i)
- # print only odd numbers
- for x in range(10):
- if (x % 2) == 0:
- # skip print(x) for this loop
- continue
- print("event number %d" % x)
- # ---------------- OUTPUT ----------------
- # ***** CONTINUE *****
- # 0
- # 1
- # 2
- # 4
- # event number 1
- # event number 3
- # event number 5
- # event number 7
- # event number 9
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