Faster way to do this...

[Harlin Seritt]

I've got the following code:

nums = range(0)
for a in range(100):
nums.append(a)

Is there a better way to have num initialized to a list of 100
consecutive int values?

Thanks,

Harlin

 

[Will McGugan]

I've got the following code:

nums = range(0)
for a in range(100):
nums.append(a)

Is there a better way to have num initialized to a list of 100
consecutive int values?

Isn't that equivalent to simply..

nums= range(100)

Will McGugan

 

[Steve Holden]

I've got the following code:

nums = range(0)
for a in range(100):
nums.append(a)

Is there a better way to have num initialized to a list of 100
consecutive int values?

Why not the simplest solution?

a = range(100)

regards
Steve

 

[Aaron Bingham]

I've got the following code:

nums = range(0)
for a in range(100):
nums.append(a)

Is there a better way to have num initialized to a list of 100
consecutive int values?

You mean like this?

nums = range(100)

;-)

--

 

[Roy Smith]

I've got the following code:

nums = range(0)
for a in range(100):
nums.append(a)

Is there a better way to have num initialized to a list of 100
consecutive int values?

Step one would be to change the first line to

nums = []

which is simpler and results in the same thing. Or, you could write
the whole thing as a one-liner using a list comprehension

nums = [a for a in range(100)]

and then you can take it one step further and just write

nums = range(100)

which I think is about as simple as you can get.

 

[Warren Postma]

Isn't that equivalent to simply..

nums= range(100)

I remember the day I first realized that 900 lines of some C++ program I
was working on could be expressed in three lines of python. Ahh.
Rebirth. Then there was the phase of the python-newbie so enamored of
map and lambda. ... Wait, actually, I'm not out of that yet.

Warren

 

[Harlin Seritt]

Excellent point Warren. I have been working with Python for about 3
years in all, but only really seriously for about a year. I am still
utterly amazed that near everything that takes me about 5 to 20 lines
of code can be done in 1, 2 or 3 lines of Python code (when done
correctly). It is very frustrating that I am still using Python as
though I would if I were writing Java or C++ code. One day I'll get the
hang of this.

Roy, I like what you showed: nums = [a for a in range(100)] . My
mistake for not expressing my question as well as I should have. Not
only am I looking for a way to fill in 100 spots (more or less) in an
array errrrr... list, but I'd like to be able to do it in intervals of
2, 4, 8 etc. as well as other things.

Thanks,

Harlin

 

[Robert Kern]

Roy, I like what you showed: nums = [a for a in range(100)] . My
mistake for not expressing my question as well as I should have. Not
only am I looking for a way to fill in 100 spots (more or less) in an
array errrrr... list, but I'd like to be able to do it in intervals of
2, 4, 8 etc. as well as other things.

Like

nums = range(0, 100, 4)

?

--
Robert Kern
(e-mail address removed)

"In the fields of hell where the grass grows high
Are the graves of dreams allowed to die."
-- Richard Harter

 

[Will McGugan]

I remember the day I first realized that 900 lines of some C++ program I
was working on could be expressed in three lines of python. Ahh.

Lately I've found myself commenting C++ code with the equivalent Python
code. I find it clearer and more terse than simply commenting in English!


Will

 

[Robert Kern]

Lately I've found myself commenting C++ code with the equivalent Python
code. I find it clearer and more terse than simply commenting in English!

If you used literate programming tools, you might be able to get a
Python version and a C++ version of your code in one go!

--
Robert Kern
(e-mail address removed)

"In the fields of hell where the grass grows high
Are the graves of dreams allowed to die."
-- Richard Harter

 

[Timo Virkkala]

Roy, I like what you showed: nums = [a for a in range(100)] . My
mistake for not expressing my question as well as I should have. Not
only am I looking for a way to fill in 100 spots (more or less) in an
array errrrr... list, but I'd like to be able to do it in intervals of
2, 4, 8 etc. as well as other things.

range(2, 100, 4)

How about you fire up the interactive python and try
help(range)