I have come across this very strange behaviour. Check this code:
if file_str.find('Geometry'):
While the anser is to compare the results of .find() with -1,
but the more Pythonic answer is just to use in:
if Geometry in file_str:
which reads a lot more cleanly, IMHO.
-tkc
--
On Thursday 03 September 2009 07:10:37 Helvin wrote:
Hi,
I have come across this very strange behaviour. Check this code:
if file_str.find('Geometry'):
#if file_str.endswith('Data_Input_Geometry.txt'):
print 'I found geometry'
elif
Hi,
I have come across this very strange behaviour. Check this code:
if file_str.find('Geometry'):
#if file_str.endswith('Data_Input_Geometry.txt'):
print 'I found geometry'
elif file_str.find('Material'):
print 'I found material'
The amazing thing
The amazing thing is when file_str = 'C:\Qt\SimLCM\Default
\Data_Input_Material.txt',
the first if statement if fulfilled, that seemingly says that in this
file_str, python actually finds the word 'Geometry'.
I know this, because the line: 'I found geometry' is printed. However,
if instead
Thanks! I just realised that too, but I used the condition:.find() 0 But
I think your's is better.
Simple programming knowledge...
I made a blog post:
http://learnwithhelvin.blogspot.com/2009/09/1-is-true-if-loops.html
http://learnwithhelvin.blogspot.com/2009/09/1-is-true-if-loops.html
On Wed, Sep 2, 2009 at 10:33 PM, Helvin Lui helvin...@gmail.com wrote:
Thanks! I just realised that too, but I used the condition:.find()
0 But I think your's is better.
Simple programming knowledge...
Ah, but != 0 vs 0 isn't a question of better, but correctness: because if
On Sep 2, 10:10 pm, Helvin helvin...@gmail.com wrote:
Hi,
I have come across this very strange behaviour. Check this code:
if file_str.find('Geometry'):
#if file_str.endswith('Data_Input_Geometry.txt'):
print 'I found geometry'
elif
On Sep 3, 1:10 am, Helvin helvin...@gmail.com wrote:
if file_str.find('Geometry'):
#if file_str.endswith('Data_Input_Geometry.txt'):
print 'I found geometry'
The amazing thing is when file_str = 'C:\Qt\SimLCM\Default
\Data_Input_Material.txt',
the first if
On Sep 3, 1:45 am, Sean DiZazzo half.ital...@gmail.com wrote:
string.find() returns the index at which the given word is found
within the string. If the string is not found it returns -1. So, no
matter what you do, string.find() will evaluate to True
It will evaluate as false if the
