joshkarpel / dis-cli

Display Python source code and bytecode side-by-side at the command line

Hello Worlds!

I'm Josh Karpel!

Interests:

• 🐍 Python
• 🦀 Rust
• 🦺 Typescript
• 🧪 Testing
• ⌨️ CLI Tools
• 🕸️ Distributed Systems

I'm currently a Software Engineer in Machine Learning at Workday. I design and develop systems for serving machine learning models.

Before that, I was a postdoc at the Morgridge Institute for Research / Center for High-Throughput Computing. I facilitated high-throughput computing projects that involved machine learning, image processing, and Python. I also helped maintain the HTCondor Python Bindings and worked on projects like HTMap. Before that, I got a PhD in Physics at the University of Wisconsin-Madison in the Yavuz Group, working on simulating interactions between quantum systems and high-power lasers.

dis-cli's Issues

Module-level code can print output

If you have something like

# foo.py

print("hi")

def bar(x):
    return x

then

$ dis foo.bar
hi
3 def bar(x):                                                                                       3 OFF              OPERATION                                               ARGS
4     return x                                                                                      4 0                LOAD_FAST                                               0                   x
                                                                                                      2                RETURN_VALUE

The hi should not appear in the output.

Module-level exceptions do not produce a nice error message

Example:

# foo.py

raise Exception

def bar(x):
    return x

Output:

$ dis foo.bar
Traceback (most recent call last):
  File "/home/jtk/.python/envs/dis-cli/bin/dis", line 33, in <module>
    sys.exit(load_entry_point('dis-cli', 'console_scripts', 'dis')())
  File "/home/jtk/.python/envs/dis-cli/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/jtk/.python/envs/dis-cli/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/jtk/.python/envs/dis-cli/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/jtk/.python/envs/dis-cli/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/mnt/c/Users/joshk/projects/dis-cli/dis_cli.py", line 40, in cli
    for idx, disp in enumerate(
  File "/mnt/c/Users/joshk/projects/dis-cli/dis_cli.py", line 51, in make_source_and_bytecode_display_for_targets
    for func in map(find_function, targets):
  File "/mnt/c/Users/joshk/projects/dis-cli/dis_cli.py", line 64, in find_function
    obj = importlib.import_module(module_path)
  File "/home/jtk/.python/envs/dis-cli/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/mnt/c/Users/joshk/projects/dis-cli/foo.py", line 1, in <module>
    raise Exception
Exception

We should print a nice message to give some context to what's happening, followed by the underlying exception.

Allow "collective" targets

• Targeting a module should target all of its direct contents (using the same discovery logic as for suggestions).
• Targeting a class should target all of its methods.