use python as a calculator

[ilovesss2004]

If I run
1.0/10**10
python will return 0

How can I make python return 1e-10?

 

[Thomas Jollans]

If I run
1.0/10**10
python will return 0

How can I make python return 1e-10?

It returns 1e-10.

 

[Tim Harig]

If I run
1.0/10**10
python will return 0

Python 2.6.4 (r264:75706, Dec 11 2009, 23:02:59)
[GCC 3.4.6] on linux2
Type "help", "copyright", "credits" or "license" for more information.
What version are you using?

How can I make python return 1e-10?

If necessary, cast everything to a float:

 

[D'Arcy J.M. Cain]

If I run
1.0/10**10
python will return 0

How can I make python return 1e-10?

What version of Python are you using?

Python 2.6.4 (r264:75706, Jan 28 2010, 11:26:00)
[GCC 4.2.1 20070719 [FreeBSD]] on freebsd7
Type "help", "copyright", "credits" or "license" for more information.1e-10

 

[ilovesss2004]

If I run
1.0/10**10
python will return 0

Python 2.6.4 (r264:75706, Dec 11 2009, 23:02:59)
[GCC 3.4.6] on linux2
Type "help", "copyright", "credits" or "license" for more information.
1e-10

What version are you using?

How can I make python return 1e-10?

If necessary, cast everything to a float:




1e-10

I use python 2.5
Must change version? Is there any other solution?

 

[Tim Wintle]

If I run
1.0/10**10
python will return 0

Python 2.6.4 (r264:75706, Dec 11 2009, 23:02:59)
[GCC 3.4.6] on linux2
Type "help", "copyright", "credits" or "license" for more information.

1.0/10**10

1e-10

What version are you using?

How can I make python return 1e-10?

If necessary, cast everything to a float:

1.0/float(10**10)

1e-10

I use python 2.5
Must change version? Is there any other solution?

Are you sure you're doing the above?

Testing on 2.5:
1e-10

.... but if you leave off the ".0" it'll think you want integer
arithmatic, so return 0.
0

Tim

 

[Etienne Rousee]

Le 24/06/2010 18:33, ilovesss2004 a écrit :

I use python 2.5
Must change version? Is there any other solution?

With python 2.6.5, I obtain 1e-10.

 

[Peter Otten]

If I run
1.0/10**10
python will return 0

How can I make python return 1e-10?

If you meant 1/10**10, by default this returns an integer in Python 2.x.
With "from __future__ import division" you can opt for the division of
integers to return a float:
1e-10

Python 3.x will return a float by default.

Peter

 

[Ian Kelly]

I use python 2.5
Must change version? Is there any other solution?

It works for me:

Python 2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.1e-010

Perhaps you're doing integer division by mistake?
0L

Cheers,
Ian