在Python中使用Lambda +过滤器进行列表过滤

Question

I am finding hard myself to filter a basic need: I have a list and I have to filter it by an value of the items:
My code:

list1=[{"a":865,"b":1},{"a":56,"b":6},{"a":995,"b":1,"c":5},{"a":1,"b":42}]
a=filter(lambda x:x["b"]==1, list1)
print a

I get the valid output, but if i want to update my filter with a==865 and b==1, i get an invalid syntax error:

a=filter(lambda x:x["a"]==865 && x["b"]==1, list1)
print a

Kindly help. Thanks in advance.

Answer 1

Replace && with and . That should do it! The docs (python 2)