python之条件判断和循环1. python之if语句score = 75
if score >= 60:
print ‘passed’2. python之if-elsescore = 55
if score >= 60:
print ‘passed’
else:
print ‘failed’3. python之if-elif-elsescore = 85
if score >= 90:
print ‘excellent’
elif score >= 80:
print ‘good’
elif score >= 60:
print ‘passed’
else:
print ‘failed’4. python之for循环l = [75, 92, 59, 68]
sum = 0.0
for x in l:
sum = sum + x
print sum / 45. python之while循环sum = 0
x = 1
while x < 100:
sum = sum + x
x = x + 2
print sum6. python之break退出循环sum = 0
x = 1
n = 1
while true:
if n > 20:
break
sum = sum + x
x = x * 2
n = n + 1
print sum7. python之continue继续循环sum = 0
x = 0
while true:
x = x + 1
if x > 100:
break
if x % 2 == 0:
continue
sum = sum + x
print sum8. python之continue继续循环for x in [1, 2, 3, 4, 5, 6, 7, 8, 9]:
for y in [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]:
if x < y:
print x * 10 + y
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