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Tutorial A4 Bolean and repeated statements

Q: Definite loops (ivm range)

where the number of repetitions is known at the moment the structure starts. The definite loop, or “for”-loop, does all necessary bookkeeping in situations where the number of repetitions is known in advance, at the latest when the loop starts executing. -> FOR LOOP

Q: Functie van range bij definit loop

To specify that the loop has to repeat n times, for some given value of n, we write: for i in range(n): # here goes the loop body The function “range” gives a list ofn numbers from 0 to (but without) n

Q: What happens if n is negative? (for range)

When the only argument of functionrangeis negative, the series is empty. In that case, the for-loop does not execute its body at all.

6 important questions on Tutorial A4 Bolean and repeated statements

Defineer sign en if or else (2x)

def sign(num):
    if num > 0:
        result = +1
    elif num < 0:
        result = -1
    else:
        result = 0
    return result

Definite loops (ivm range)

where the number of repetitions is known at the moment the structure starts.
The definite loop, or “for”-loop, does all necessary bookkeeping in situations where the number of repetitions is known in advance, at the latest when the loop starts executing. -> FOR LOOP

The indefinite loop (voorbeeld a while-loop that computes the first power of 2 that is larger than 1000:)

“while”-loop, is very similar to the if-structure.

power = 1
exponent = 0
while power <= 1000:
    power = power * 2
    exponent = exponent + 1
print '2 ** ', exponent, '=', power

Functie van range bij definit loop

To specify that the loop has to repeat n times, for some given value of n, we write:

for i in range(n):
# here goes the loop body

The function “range” gives a list ofn numbers from 0 to (but without) n

For i in range(10):
print i

0
1
2
3
4
5
6
7
8
9

What happens if n is negative? (for range)

When the only argument of functionrangeis negative, the series is empty. In that case, the for-loop does not execute its body at all.

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Python

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Tutorial A4 Bolean and repeated statements

6 important questions on Tutorial A4 Bolean and repeated statements

Defineer sign en if or else (2x)

Definite loops (ivm range)

The indefinite loop (voorbeeld a while-loop that computes the first power of 2 that is larger than 1000:)

Functie van range bij definit loop

For i in range(10): print i

What happens if n is negative? (for range)

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For i in range(10):
print i