将Python列表中的键值与多个词典进行比较

Question

I have a list made up of dictionaries. What I need to do is compare the value of key "a" (172.60) in one dictionary, and if it is 30% greater than the key "b" (168.80) value in the same dictionary then print the value of "value". And iterate over all of the dictionaries in the entire list.I have tried many different 'for' and 'if' constructs but the solution escapes me. I am using python v2.6.6.

List1= [{"p":0,"c":0,"b":168.80,"a":172.60,"oi":0,"vol":0,"value":355.00},
        {"p":0,"c":0,"b":163.80,"a":167.60,"oi":0,"vol":0,"value":360.00}]

Answer 1

One way to do it:

for dd in List1:
    if dd["a"] > 1.3 * dd["b"]:
        print dd["value"]