d = {
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
print 'Adam:',d.get('Adam')
print 'Lisa:',d.get('Lisa')
print 'Bart:',d.get('Bart')
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
print 'Adam:',d.get('Adam')
print 'Lisa:',d.get('Lisa')
print 'Bart:',d.get('Bart')
2016-07-20
sum = 0
x = 1
n = 1
while True:
sum+=x;
x*=2;
n+=1;
if n>20:
break;
print sum;
x = 1
n = 1
while True:
sum+=x;
x*=2;
n+=1;
if n>20:
break;
print sum;
2016-07-20
这样写也是可以的
age = 20
if 6 <= age < 18:
print 'teenager'
elif age >= 18:
print 'adult'
else:
print 'kid'
age = 20
if 6 <= age < 18:
print 'teenager'
elif age >= 18:
print 'adult'
else:
print 'kid'
2016-07-20