L = [95.5,85,59]
print L[0]
print L[1]
print L[2]
print L[2]
print L[0]
print L[1]
print L[2]
print L[2]
2016-07-09
已采纳回答 / 慕粉3535989
len是length的簡寫,就是在d那個括號内有多少個string,譬如d={'apple','banana','pear','strawberry'},那麽在括號内有4個string,len(d)就是4
2016-07-09
d = {
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for key in d:
print key+ ":" + str(d.get(key))
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for key in d:
print key+ ":" + str(d.get(key))
2016-07-09
个人认为'A', 'B'是一个整体 去括号以后元素的数量会发生改变,大神轻喷A.A
2016-07-09