Initializing help system before first use

problem.getnamelist

Purpose
Returns the names for the rows, columns, sets, piecewise linear constraints, general constraints or objectives in a given range. The names will be returned in a list of Python strings.
Synopsis
names = problem.getnamelist(type, first, last)
Arguments
type 
xpress.names_row 
for row names;
xpress.names_column 
for column names;
xpress.names_set 
for set names;
xpress.names_pwlcons 
for piecewise linear constraint names;
xpress.names_gencons 
for general constraint names;
xpress.names_objective 
for objective names.
names 
A list containing all returned names.
first 
First row, column or set in the range. If None, it is taken as zero.
last 
Last row, column or set in the range. If None, it is taken as the penultimate element in the list defined by type.
Example
The following example retrieves and outputs the row and column names for the current problem. 
cols = prob.attributes.cols
rows = prob.attributes.rows

rnames = prob.getnamelist(1, 0, rows - 1)
cnames = prob.getnamelist(2, 0, cols - 1)

for k,v in enumerate(rnames):
    print("Row {0:4d}: {1}", k, v)

for k,v in enumerate(cnames):
    print("Column {0:4d}: {1}", k, v)

Parent Topic Xpress problem methods

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