thebjorn
Programmatic use
I'm trying to use pydeps as a library, to get the SVG as text, and not output it in a file.
The examples in #50 do not allow to do that.
What I'm doing instead is this:
from pydeps import py2depgraph, dot
from pydeps.pydeps import depgraph_to_dotsrc
from pydeps.target import Target
target = Target("src/mkdocstrings")
with target.chdir_work():
dep_graph = py2depgraph.py2dep(target)
dot_src = depgraph_to_dotsrc(target, dep_graph)
svg = dot.call_graphviz_dot(dot_src, "svg")
The problem is that this code reaches cli.verbose(...) while cli.verbose is not initialized, and is still None, resulting in a not callable exception. This forces me to do this:
from pydeps import cli
cli.verbose = cli._not_verbose
...which is a bit cumbersome :sweat_smile:
Then I ran into other errors because of missing arguments, and it's very hard to know which one I need since they are hidden along a good part of the call chain in **kwargs dicts, and otherwise are not set to default values. I had to run back and forth debugging inspection to get the first options:
options = {"exclude_exact": [], "exclude": [], "only": ["mkdocstrings"], "show_cycles": False, "show_raw_deps": False}
...then stopped and decided to actually use the argument parser:
options = cli.parse_args(["src/mkdocstrings", "--noshow", "--only", "mkdocstrings"])
target = Target(options["fname"])
with target.chdir_work():
dep_graph = py2depgraph.py2dep(target, **options)
dot_src = depgraph_to_dotsrc(target, dep_graph, **options)
Anyway, I got it to work, so it's fine, this is just some feedback on using pydeps as a library :sweat_smile:
Hope this can help others :slightly_smiling_face:
To use --start-color, we must also do this manually:
from pydeps import colors
colors.START_COLOR = options["start_color"]
The next version of pydeps will have a call_pydeps(file_or_dir, **kwargs) function where you only have to specify the options you want to override.
I looked at the code and it is still not as programmatic as I would like it to be :smile:
call_pydeps returns either a list of externals, or _pydeps(inp, **ctx) which actually returns nothing.
So, it's better than before as you can use call_pydeps from Python to generate SVG or else, but you still cannot get the SVG contents without writing it to a file.
Don't bother too much about my use case though, I have working code already :slightly_smiling_face: