Last active
May 29, 2020 23:24
-
-
Save Skinner927/d60e418d52befa621e8be5d58ad911ee to your computer and use it in GitHub Desktop.
iPython without being installed locally with different version global python
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # This is a roundabout way to start ipython from inside a virtualenv without it being installed | |
| # in that virtualenv. The only caveot is that the "global" python must have ipython installed. | |
| # What this function does that's different than simply calling the global ipython is it ensures to | |
| # call the ipython that is installed for the same major.minor python version as in the virtualenv. | |
| # This is most useful if you use pyenv for example as global python3 could be 3.7 and local | |
| # virtualenv python3 is 3.6. | |
| # This is designed to be dropped into your shell profile (~/.bashrc|~/.zshrc) | |
| unset ipy_lookup | |
| declare -A ipy_lookup | |
| function ipy { | |
| local PY_BIN | |
| local IPYTHON | |
| local PYV | |
| # This quick way will work if ipython is in the virtualenv | |
| PY_BIN="$(python -c 'import sys; print(sys.executable)')" | |
| IPYTHON="$(dirname "$PY_BIN")/ipython" | |
| if [[ -x "$IPYTHON" ]]; then | |
| "$IPYTHON" | |
| else | |
| # Ask the current python what version it is | |
| PYV="$(python -c 'import sys; print(".".join(str(i) for i in sys.version_info[:2]))')" | |
| PY_BIN="${ipy_lookup[$PYV]}" | |
| if [[ -z "$PY_BIN" ]]; then | |
| echo "Looking for iPython for Python $PYV" | |
| # In a new shell (where pyenv should load if equipped) try to find that version | |
| PY_BIN="$(env -i $SHELL -li -c "which python$PYV")" | |
| if [[ -x "$PY_BIN" ]]; then | |
| ipy_lookup[$PYV]="$PY_BIN" | |
| fi | |
| fi | |
| "$PY_BIN" -m IPython | |
| fi | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment