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# A script for running pyperformance out of the repo in dev-mode.
import
os
.
path
import
sys
REPO_ROOT
=
os
.
path
.
dirname
(
os
.
path
.
abspath
(
__file__
))
VENVS
=
os
.
path
.
join
(
REPO_ROOT
,
".venvs"
)
def
resolve_venv_root
(
kind
=
"dev"
,
venvsdir
=
VENVS
):
import
sysconfig
if
sysconfig
.
is_python_build
():
sys
.
exit
(
"please install your built Python first (or pass it using --python)"
)
# XXX Handle other implementations too?
base
=
os
.
path
.
join
(
venvsdir
,
kind
or
"dev"
)
major
,
minor
=
sys
.
version_info
[:
2
]
pyloc
=
(
(
os
.
path
.
abspath
(
sys
.
executable
)).
partition
(
os
.
path
.
sep
)[
2
].
lstrip
(
os
.
path
.
sep
)
).
replace
(
os
.
path
.
sep
,
"-"
)
return
f"
{
base
}
-
{
major
}
.
{
minor
}
-
{
pyloc
}
"
def
ensure_venv_ready
(
venvroot
=
None
,
kind
=
"dev"
,
venvsdir
=
VENVS
):
if
sys
.
prefix
!=
sys
.
base_prefix
:
assert
os
.
path
.
exists
(
os
.
path
.
join
(
sys
.
prefix
,
"pyvenv.cfg"
))
venvroot
=
sys
.
prefix
python
=
sys
.
executable
readyfile
=
os
.
path
.
join
(
sys
.
prefix
,
"READY"
)
isready
=
os
.
path
.
exists
(
readyfile
)
else
:
import
venv
if
not
venvroot
:
venvroot
=
resolve_venv_root
(
kind
,
venvsdir
)
# Make sure the venv exists.
readyfile
=
os
.
path
.
join
(
venvroot
,
"READY"
)
isready
=
os
.
path
.
exists
(
readyfile
)
if
not
isready
:
relroot
=
os
.
path
.
relpath
(
venvroot
)
if
not
os
.
path
.
exists
(
venvroot
):
print
(
f"creating venv at
{
relroot
}
..."
)
else
:
print
(
f"venv
{
relroot
}
not ready, re-creating..."
)
venv
.
create
(
venvroot
,
with_pip
=
True
,
clear
=
True
)
else
:
assert
os
.
path
.
exists
(
os
.
path
.
join
(
venvroot
,
"pyvenv.cfg"
))
# Return the venv's Python executable.
binname
=
"Scripts"
if
os
.
name
==
"nt"
else
"bin"
exename
=
os
.
path
.
basename
(
sys
.
executable
)
python
=
os
.
path
.
join
(
venvroot
,
binname
,
exename
)
# Now make sure the venv has pyperformance installed.
if
not
isready
:
import
subprocess
relroot
=
os
.
path
.
relpath
(
venvroot
)
print
(
f"venv
{
relroot
}
not ready, installing dependencies..."
)
proc
=
subprocess
.
run
(
[
python
,
"-m"
,
"pip"
,
"install"
,
"--upgrade"
,
"--editable"
,
REPO_ROOT
],
)
if
proc
.
returncode
!=
0
:
sys
.
exit
(
"ERROR: install failed"
)
with
open
(
readyfile
,
"w"
):
pass
print
(
"...venv {relroot} ready!"
)
return
venvroot
,
python
def
main
(
venvroot
=
None
):
_
,
python
=
ensure_venv_ready
(
venvroot
)
if
python
!=
sys
.
executable
:
# Now re-run using the venv.
os
.
execv
(
python
, [
python
,
*
sys
.
argv
])
# <unreachable>
# Now run pyperformance.
import
pyperformance
.
cli
pyperformance
.
cli
.
main
()
if
__name__
==
"__main__"
:
main
()
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