Cannot run python3 code from the command line

Question

Cannot run python3 code from the command line

ReagentX opened this issue 7 years ago · comments

Christopher Sardegna commented 7 years ago

There is no argument in the documentation that allows you to specify a different command other than python to run the code, so this will always run Python 2.7 instead of Python 3.x.

Alex LordThorsen · Answer 1 · Thu Aug 31 2017 08:07:22 GMT+0800 (China Standard Time)

Seconding thing running on python3.5.

 pycallgraph graphviz -- test.py
Traceback (most recent call last):
  File "/home/alex/.virtualenvs/pycallgraph/bin/pycallgraph", line 26, in <module>
    exec(__file_content)
  File "<string>", line 800
    print v.to_dot(draw_defines=options.draw_defines,
          ^
SyntaxError: invalid syntax

Jeff Gibson · Answer 2 · Tue Aug 21 2018 05:51:38 GMT+0800 (China Standard Time)

A workaround is to use virtualenv

$ virtualenv -p /usr/bin/python3 .virtualenv
$ source .virtualenv/bin/activate
$ python --version
Python 3.6.5
$ pip install pycallgraph

谭云涛 · Answer 3 · Thu Nov 29 2018 16:45:39 GMT+0800 (China Standard Time)

I try to use python3.3 , but i get following warning:
`(process:11443): Pango-CRITICAL **: 16:38:25.373: pango_cairo_show_layout: assertion 'PANGO_IS_LAYOUT (layout)' failed

(process:11443): Pango-CRITICAL **: 16:38:25.373: pango_cairo_show_layout: assertion 'PANGO_IS_LAYOUT (layout)' failed

(process:11443): Pango-CRITICAL **: 16:38:25.373: pango_cairo_show_layout: assertion 'PANGO_IS_LAYOUT (layout)' failed`
and i get following ugly picture:

@jagibson can you help me, or any person can help me?

Jeff Gibson · Answer 4 · Tue Dec 04 2018 01:56:33 GMT+0800 (China Standard Time)

@YuntaoTan I'm certainly not an expert on this project - however with those errors I would check that you have the libpango and libcairo2 OS libraries installed.