New submission from Jonathan Livni :
all( (x<=y) for x,y in zip(L, L[1:]) )
all([(x<=y) for x,y in zip(L, L[1:])])
Both lines of code above check if L is a non-decreasing list. Both should
return the same results. But under some conditions, they don't. I've
encountered thi
Jonathan Livni added the comment:
The exact list of decimals doesn't help - I tried taking the list and
reproducing the bug with the following short script, but the problem did not
reproduced:
from decimal import Decimal
L = [Decimal('6.700'), Decimal('6.800'),
Jonathan Livni added the comment:
Another note - the original problematic code looks like this:
def non_decreasing(L):
return all(x<=y for x, y in zip(L, L[1:]))
Changing it to:
def non_decreasing(L):
def f(L):
return [x<=y for x, y in zip(L, L[1:])]
return a
Jonathan Livni added the comment:
The script I used is a single file single threaded code - but - It uses
django's ORM to get the data from a MySQL database.
I've reduced the code path to this:
import sys,os
sys.path.append(os.path.dirname(os.getcwdu()))
os.environ['DJANGO_
Jonathan Livni added the comment:
from pylab import *
There lies the rub?
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Python tracker
<http://bugs.python.org/issue11221>
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Python-bugs-list m
Jonathan Livni added the comment:
Let my foolishness be a reminder to all not to use "from [module] import *"
After saying that - I believe overloading a built in Python function in a
popular package\module is a mistake!
I still don't know if pylab's all() is erroneou
New submission from Jonathan Livni:
These lines of Python (2.7):
y = float(x)
gives the error:
TypeError: float() argument must be a string or a number.
In various cases such as:
x = [0]
x = None
x = SomeClass()
In addition to the information given in the error message
