example.psf

proute solution file v1;
# The first line is mandatory, must start with "proute solution file v", then
# a version number for the file format (so far only v1 exists). The last
# character of the first line is very important: it is used as field separator
# in the following lines. It is not recommended to use the comma as separator,
# since it prevents to use the very common and useful attribute 'node sequence'
# which is a list with comma-separated elements.
# Each line starting with a hash sign is ignored, by the way.
# The file is organized by route sections, i.e. route after route. For each
# route a first line indicates basic attributes like cost, duration.
# Then optionally arcs can be specified, one per line (with e.g. load).
# Then, also optionally, node information inside routes can be specified, one
# per line (with e.g. quantity delivered by this route to this node).
# Finally, extra node information can be specified at any point in the file
# after the format description lines.
# Although all this information is optional, the lines specifying information
# format are mandatory. There are four of these lines for route, arc, routenode
# and node information. They are now described.
# The next line gives the format for the routes. The first field is always the
# keyword 'route'.
route;node sequence;cost;duration;load
# The next line gives the format for arcs. The first field is always the
# keyword 'arc'.
arc;from;to;load
# The next line gives the format for node information inside routes. The first
# field is always the keyword 'routenode'. This line doesn't specify any
# attribute for node information inside routes.
routenode;
# The next line gives the format for extra node information. The first field is
# always the keyword 'node', the second field is always the keyword 'index'.
node;index;just before depot
# At this point, we specify solution attributes by using lines starting with a
# separator and having two fields.
;cost;200
;duration;150
# From now on, a line can be either route, arc or node information, or a global
# attribute for the solution. The next line specifies information for a route.
# Note that the second field is a python list
route;[0, 1, 2, 0];120;98;20
# The following lines give more information about the arcs.
arc;0;1;20
arc;1;2;10
arc;2;0;0
# Please note that all information relative to a route must be given at once.
# Arc and node information is always relative to the previous 'route' line.
# Here comes a second route.
route;[0,3,4,0];80;52;15
arc;0;3;15
arc;3;4;8
arc;4;0;0
# We now specify extra node information. This information could be specified
# before too. Such lines start with the keyword 'node', then the node index,
# then the remaining attributes described earlier in the format line.
node;0;False
node;1;False
node;2;True
node;3;False
node;4;True