Re: [Tutor] camera caliberation

2014-03-24 Thread Alan Gauld
On 24/03/14 11:58, vidyashree vasanth wrote: hiii i am geting an error ibpng warning: Image width is zero in IHDR libpng warning: Image height is zero in IHDR libpng error: Invalid IHDR data whilw executing camera caliberation programin open cv can you help me This is a mailing list for those l

[Tutor] Character counting again, was Re: Tutor Digest, Vol 121, Issue 56

2014-03-24 Thread Peter Otten
Jumana yousef wrote: [Please don't reply to the digest. At the very least change the subject to its original text. Thank you.] > just a reminder of my data: > it cossets of multiple sequences of DNA that I need to count the bases(characters) and calculate the percentage of C+G and calculate the

[Tutor] FASTA parsing, biological sequence analysis

2014-03-24 Thread Danny Yoo
Hi Jumana, Following up. Let's change the subject line. This makes it much easier for folks to see that this is a new topic of conversation. [Apologies to the others on the list for my last reply: I didn't realize that the subject was wrong, as well as the long quoted digest. I'll try to be m

[Tutor] camera caliberation

2014-03-24 Thread vidyashree vasanth
hiii i am geting an error ibpng warning: Image width is zero in IHDR libpng warning: Image height is zero in IHDR libpng error: Invalid IHDR data whilw executing camera caliberation programin open cv can you help me ___ Tutor maillist - Tutor@python.org

Re: [Tutor] __abs__() not acting as expected

2014-03-24 Thread Danny Yoo
Hi Jim, The point the book is trying to make here is purely a parsing problem. It's trying to say that the expression: -3.__abs__() has a parse tree that may be unexpected to beginners. The parse is analogous to: unary subtraction on the following: the __abs__() method

Re: [Tutor] Expressions, literals, operator precedence

2014-03-24 Thread Jim Byrnes
On 03/23/2014 11:36 PM, Ben Finney wrote: Jim Byrnes writes: I am reading Practical Programming - An Introduction to Computer Science Using Python 3. They give this example: abs(-3) 3 -3 .__abs__() 3 That's a poor example, in my opinion. It's not good for an introductory text to show