[split] Debugging scripts basics

[tultalk]

Why not use an IDE with debugging?

What is a good IDE w/debugging to use in 2.7?
I am using the pdb and can't get breakoiint to work:

python -m pdb /usr/local/lib/python2.7/dist-packages/examples/simpletest.py

(Pdb) b Adafruit_ADS1x15/ADS1x15.py:134

Response:
Breakpoint 1 at /usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py:134

(Pdb) run
Restarting /usr/local/lib/python2.7/dist-packages/examples/simpletest.py with arguments:

(Pdb) commands 1
(com) print result[1]
(com) end
(Pdb) r

Does not stop at breakpoint

postmortom:

(Pdb) c
Reading ADS1x15 values, press Ctrl-C to quit...
| 0 | 1 | 2 | 3 |
-------------------------------------

Error:
Traceback (most recent call last):
  File "/usr/lib/python2.7/pdb.py", line 1314, in main
    pdb._runscript(mainpyfile)
  File "/usr/lib/python2.7/pdb.py", line 1233, in _runscript
    self.run(statement)
  File "/usr/lib/python2.7/bdb.py", line 400, in run
    exec cmd in globals, locals
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/examples/simpletest.py", line 42, in <module>
    values[i] = adc.read_adc(i, gain=GAIN)
  File "/usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py", line 192, in read_adc
    return self._read(channel + 0x04, gain, data_rate, ADS1x15_CONFIG_MODE_SINGLE)
  File "/usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py", line 133, in _read
    result = self._device.readList(ADS1x15_POINTER_CONVERSION, 2)
  File "/usr/local/lib/python2.7/dist-packages/Adafruit_GPIO/I2C.py", line 134, in readList
    results = self._bus.read_i2c_block_data(self._address, register, length)
  File "/usr/local/lib/python2.7/dist-packages/Adafruit_PureIO/smbus.py", line 216, in read_i2c_block_data
    cmdstring[i] = val
TypeError: one character string expected
Uncaught exception. Entering post mortem debugging

Why not stopping on breakpoint and showing value?

Thanks

[deanhystad]

I've used PyCharm Community and Visual Studio Code on Windows. Both are free and I think they work pretty well. I think you can tell either which python or virtual environment they are supposed to use.

[Larz60+]

As a former PyCharm user. I's recomment VSCode.
Tutorial here: https://python-forum.io/Thread-VS-Code-f...ght=VSCode

[deanhystad]

VS Code is pretty good. Especially if you are using kite.

[bowlofred]

It looks to me like you set a breakpoint for line 134 in ADS1x15.py. But your traceback shows an error was thrown from line 133 of that file. So I suspect that line 134 was never reached.

Try setting a breakpoint before line 133.

[menator01]

Off topic but kind of lean toward atom myself. Free, has lots of community support, and many plugins to help with coding.