Type « array « Python Data Type Q&A

1. Expected LP_c_double instance instead of c_double_Array - python ctypes error    stackoverflow.com

I have a function in a DLL that I have to wrap with python code. The function is expecting a pointer to an array of doubles. This is the error I'm ...

2. how to make a python array of particular objects    stackoverflow.com

in java, the following code defines an array of the predefined class (myCls):

myCls arr[] = new myCls

3. Why does Python Array Module Process Strings and Lists Differently?    stackoverflow.com

I'm having trouble understanding the result of the following statements:

>>> from array import array
>>> array('L',[0xff,0xff,0xff,0xff])
array('L', [255L, 255L, 255L, 255L])


>>> from array import array
>>> array('L','\xff\xff\xff\xff')
Traceback (most recent call last):
  File "<stdin>", ...

4. python dictionary with constant value-type    stackoverflow.com

I bumped into a case where I need a big (=huge) python dictionary, which turned to be quite memory-consuming. However, since all of the values are of a single type (long) - ...

5. Python SWIG arrays    stackoverflow.com

I am wrapping a C module with SWIG for Python. Is there any way to turn all Python lists/tuples whose members are all of the same type (same kind of Swig ...

6. How to create array of the certain type in python    stackoverflow.com

How do you create an array of defined length of the certain type in python? To be precise I am trying to create an array of handles that is able to ...

7. Python: Multi-dimensional array of different types    stackoverflow.com

Is it possible to create a multi-dimensional array of different types in Python? The way I usually solve it is [([None] * n) for i in xrange(m)], but I don't want ...

8. Array allocation of SWIG C++ type from Python    stackoverflow.com

I'm writing a python script for a program that has exposed its C++ API using SWIG. A SWIG exposed function has an interface like this:

void writePixelsRect(JoxColor* colors, int left, int top, int ...

9. How do I get auto-suggestions for array options when typing in Vim?    stackoverflow.com

Let's say I type

a = [1, 2]

10. perl equivalent of python array.array(typecode, ..)    stackoverflow.com

I am trying to translate a python script to perl but currently stuck at couple of code snipets. For instance how to write following python code in perl? (without using any perl ...

11. Python: check if an object is NOT an "array-type"    stackoverflow.com

I'm looking for a way to test if an object is not of a "list-ish" type, that is - not only that the object is not iterable (e.g. - you can ...

12. How to read csv file with string but convert to different type and send to an array in python?    stackoverflow.com

I have a csv file, contain datetime, number1, number2, number3 number4. I use code to read, but how to change the types. my code:

import csv
import datetime
myarray=([])
filename='Contract.csv'
f=csv.reader(open(filename,'rb'), delimiter=',')
for row in f:
    ...

13. soaplib can return array of dictionary?    stackoverflow.com

How to return dictionary from soaplib web service method.

import soaplib
from soaplib.core.service import rpc, DefinitionBase
from soaplib.core.model.primitive import String, Integer
from soaplib.core.server import wsgi
from soaplib.core.model.clazz import Array


class HelloWorldService(DefinitionBase):
    @soap(String,Integer,_returns=Array(String))
   ...

14. ValueError: Cannot convert argument type to rgba array?    stackoverflow.com

I am learning to draw scatter using matplotlib. However, there is a bug and it seems related with the color argument. Could anyone explain me the mistake? I googled but no ...