Add import parser to deal with local imports

[samwaseda]

Since local imports are not included in function.__globals__, I added an import parser to complete the scope dictionary, e.g.:

def cos(a):
    import math
    from numpy import linalg as la
    return math.cos(la.norm(a))

[github-actions]

👈 Launch a binder notebook on branch pyiron/flowrep/import_parser

[codecov]

Codecov Report

❌ Patch coverage is 97.22222% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.94%. Comparing base (5491049) to head (e058027).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
flowrep/models/parsers/import_parser.py	95.45%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #158      +/-   ##
==========================================
- Coverage   98.97%   98.94%   -0.04%     
==========================================
  Files          28       29       +1     
  Lines        1949     1982      +33     
==========================================
+ Hits         1929     1961      +32     
- Misses         20       21       +1     

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[Copilot]

Pull request overview

This PR adds an import parser to handle local imports in functions, which are not included in function.__globals__. The implementation parses import and from ... import ... statements from function ASTs and builds a scope dictionary that is merged with the module-level scope.

Changes:

• Added import_parser.py module with build_scope() function to parse local imports from AST nodes
• Modified CallCollector in crawler.py to collect import statements alongside function calls
• Extended get_scope() in object_scope.py to accept optional extra modules from local imports
• Added integration test to verify local imports are correctly detected in call dependencies

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 7 comments.

File	Description
flowrep/models/parsers/import_parser.py	New module that parses AST import nodes and dynamically imports modules to build a scope dictionary
flowrep/crawler.py	Extended CallCollector to visit and collect import nodes, integrated import parser into dependency analysis
flowrep/models/parsers/object_scope.py	Added optional extra_modules parameter to get_scope() for merging local imports
tests/unit/test_crawler.py	Added test function with local imports and integration test validating they are captured

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[liamhuber]

I see the necessity for crawler. This is also a good point that the ParseWorkflow should get extended to handle import syntax. However, I'm not comfortable modifying object_scope.get_scope in this way, since it lets you just fake existing scope.

Let me blatantly steal handle_Import ideas onto ParseWorkflow and modify the scope: ScopeProxy with it; for crawler let me think about it more -- on replying to the meeting thread I got scared that we're being too ambitious with the crawler anyhow 😬

[liamhuber]

I'm not super comfortable with this. I'd rather leave get_scope alone, and then mutate a ScopeProxy object if and when we know there are new symbols available