The MOSEK Python optimizer API manual Version 7.0 (Revision 141)

5.13. CONVENTIONS EMPLOYED IN THE API 75
5.13.4 Array objects
The MOSEK Python API provides a simple array object in the module mosekarr. This includes a
one-dimensional dense array which can be of type Float, Int or Object, and a few operators and
functions to create and modify array objects.
Arrays can be constructed in several ways:
# Create an array of integers
a0 = array([1,2,3],int)
# Create an array of floats
a1 = array([1,2,3],float)
# Create an integer array of ones
a2 = ones(10)
# Create an float array of ones
a3 = ones(10,float)
# Create a range of integers 5,6,...,9
a4 = range(5,10)
# Create and array of objects
a5 = array([’a string’, ’b string’, 10, 2.2])
A limited set of operations on arrays are available - these should work more or less like the equivalent
Numeric operations:
a = ones(10,float)
b = 1.0 * arange(10)
# element-wise multiplication, addition and subtraction
c0 = a * b
c1 = a + b
c2 = a - b
# multiplly each element by 2.1
c4 = a * 2.1
# add 2 to each element
c5 = a + 2
If more advanced array operations is needed, it is necessary to install the Python Numeric package.
5.13.5 Typical problems using the Python API
Since all all type-information in Python is implicit, type-checking is performed only when required,
and in certain cases it is necessary to explicitly write type information.
The MOSEK API currently only supports its own array object (mosek.array.array) and Pythonnumpy
arrays. Other array or list compatible objects will are accepted but are converted.
Typically type errors occur in two situations: