On Wednesday, October 2, 2013 10:01:16 AM UTC-7, tri...@gmail.com wrote:
> am trying to round off values in a dict to 2 decimal points but have been
> unsuccessful so far. The input I have is like this:
>
>
>
>
>
> y = [{'a': 80.0, 'b': 0.0786235, 'c': 10.0, 'd': 10.6742903}, {'a':
> 80.73246, 'b': 0.0, 'c': 10.780323, 'd': 10.0}, {'a': 80.7239, 'b':
> 0.7823640, 'c': 10.0, 'd': 10.0}, {'a': 80.7802313217234, 'b': 0.0, 'c':
> 10.0, 'd': 10.9762304}]
>
>
>
>
>
>
>
> I want to round off all the values to two decimal points using the ceil
> function. Here's what I have:
>
>
>
>
>
> def roundingVals_toTwoDeci():
>
> global y
>
> for d in y:
>
> for k, v in d.items():
>
> v = ceil(v*100)/100.0
>
> return
>
> roundingVals_toTwoDeci()
>
>
>
>
>
>
>
> But it is not working - I am still getting the old values.
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I am not sure what's going on but here's the current scenario: I get the values
with 2 decimal places as I originally required. When I do json.dumps(), it
works fine. The goal is to send them to a URL and so I do a urlencode. When I
decode the urlencoded string, it gives me the same goodold 2 decimal places.
But, for some reason, at the URL, when I check, it no longer limits the values
to 2 decimal places, but shows values like 9.10003677694312. What's going on.
Here's the code that I have:
class LessPrecise(float):
def __repr__(self):
return str(self)
def roundingVals_toTwoDeci(y):
for d in y:
for k, v in d.iteritems():
d[k] = LessPrecise(round(v, 2))
return
roundingVals_toTwoDeci(y)
j = json.dumps(y)
print j
//At this point, print j gives me
[{"a": 80.0, "b": 0.0, "c": 10.0, "d": 10.0}, {"a": 100.0, "b": 0.0, "c": 0.0,
"d": 0.0}, {"a":
80.0, "b": 0.0, "c": 10.0, "d": 10.0}, {"a": 90.0, "b": 0.0, "c": 0.0, "d":
10.0}]
//then I do,
params = urllib.urlencode({'thekey': j})
//I then decode params and print it and it gives me
thekey=[{"a": 80.0, "b": 0.0, "c": 10.0, "d": 10.0}, {"a": 100.0, "b": 0.0,
"c": 0.0, "d":
0.0}, {"a": 80.0, "b": 0.0, "c": 10.0, "d": 10.0}, {"a": 90.0, "b": 0.0, "c":
0.0, "d": 10.0}]
However, at the URL, the values show up as 90.000043278694123
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