> 2009/7/6 Steven Buck :
>> # I call my data set the psid (Panel Study of Income Dynamics)
>> # In Stata this would look like and NXK matrix (N observations and K
>> variables)
>> psid=Reader(file('data3.dta'))
>>
>> # I gather this next just creates a list of the variable names.
>> varnames=[x.na
Thanks for the previous responses. This isn't homework--I'm beyond
coursework, although I am a newbie to Python (and I've never had to do much
real programming since I've just used Stata for econometric analysis). I'm
testing Python as a more powerful alternative to Stata.
I've learned from the
2009/7/6 Steven Buck :
> Thanks for the previous responses. This isn't homework--I'm beyond
> coursework, although I am a newbie to Python (and I've never had to do much
> real programming since I've just used Stata for econometric analysis). I'm
> testing Python as a more powerful alternative to
In [1]: test=[[1,2,3],[4,5,6],[7,8,9]]
In [3]: testvar2 = []
In [16]: for i in range(len(test)):
: testvar2.append(test[i][1])
:
:
In [17]: testvar2
Out[17]: [2, 5, 8]
Robert
On Sun, 2009-07-05 at 15:57 -0700, Steven Buck wrote:
> Hi Python Tutors:
>
> I ha
2009/7/5 Steven Buck :
for i in len(test):
> testvar2.append(test[i][2])
>
> I want testvar2 = [2,5,8] but instead I get the following error message:
>
> Traceback (most recent call last):
> File "", line 1, in
> for i in len(test):
> TypeError: 'int' object is not iterable
Read your error message... It highlighted the first line of your for
loop ansd said ints aren't iterable. len(list) returns an integer. You
want a list of items... for i in range(len(list)):
On 7/5/09, Steven Buck wrote:
> Hi Python Tutors:
>
> I have a data structure that looks like:
>
test
Hi Python Tutors:
I have a data structure that looks like:
>>> test=[[1,2,3],[4,5,6],[7,8,9]]
I want to define a new variable that captures the second element of each
sublist from above:
>>> testvar2 = []
Next I try to capture the aforementioned elements:
>>> for i in len(test):
t
