标签：python
列表的方法：help(list.append)
append L.append(object) -- append object to end 追加元素
remove 删除第一次出现的元素
L.remove(value) -- remove first occurrence of value.
Raises ValueError if the value is not present.
count L.count(value) -> integer -- return number of occurrences of value 元素在列表中出现的个数
reverse L.reverse() -- reverse *IN PLACE* 倒序
extend L.extend(iterable) -- extend list by appending elements from the iterable 追加list
sort 排序
L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;
cmp(x, y) -> -1, 0, 1
index 返回元素的位置，无则抛异常
L.index(value, [start, [stop]]) -> integer -- return first index of value.
Raises ValueError if the value is not present.
insert L.insert(index, object) -- insert object before index
pop
L.pop([index]) -> item -- remove and return item at index (default last). 返回最后一个元素，并删除
Raises IndexError if list is empty or index is out of range.
列表的切片
a[1:] #片段操作符
[1,2]+[3,4] #同extend()
[2]*4 #为 [2,2,2,2]
del l[2] #删除指定下标的元素
del list[1:3] #删除指定下标范围的元素
list的复制
list1=list2 #list2的别名，对list1操作，即对list2操作
list1=list2[:] #生成list2的一个copy
元组：
count T.count(value) -> integer -- return number of occurrences of value
index
T.index(value, [start, [stop]]) -> integer -- return first index of value.
Raises ValueError if the value is not present.
字典
dict.clear() -> D.clear() -> None. Remove all items from D.
dict.copy() -> D.copy() -> a shallow copy of D
dict.fromkeys() dict.fromkeys(S[,v]) -> New dict with keys from S and values equal to v.
v defaults to None.
dict.get() D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None.
dict.has_key() D.has_key(k) -> True if D has a key k, else False
dict.items() D.items() -> list of D's (key, value) pairs, as 2-tuples
dict.iteritems() D.iteritems() -> an iterator over the (key, value) items of D
dict.iterkeys() D.iterkeys() -> an iterator over the keys of D
dict.itervalues() D.itervalues() -> an iterator over the values of D
dict.keys() D.keys() -> list of D's keys
dict.mro() mro() -> list
return a type's method resolution order
dict.pop() D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
If key is not found, d is returned if given, otherwise KeyError is raised
dict.popitem()
D.popitem() -> (k, v), remove and return some (key, value) pair as a
2-tuple; but raise KeyError if D is empty.
dict.setdefault()
D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D
dict.update()
update(...)
D.update([E, ]**F) -> None. Update D from dict/iterable E and F.
If E present and has a .keys() method, does: for k in E: D[k] = E[k]
If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v
In either case, this is followed by: for k in F: D[k] = F[k]
dict.values() D.values() -> list of D's values
dict.viewitems() D.viewitems() -> a set-like object providing a view on D's items
dict.viewkeys() D.viewkeys() -> a set-like object providing a view on D's keys
dict.viewvalues() D.viewvalues() -> an object providing a view on D's values
标签：python
原文地址：http://blog.51cto.com/395469372/2088353
