This is the command pcp-python that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
pcp-python - run a python script using a preferred python variant
SYNOPSIS
pcp python [SCRIPT [ARG]...]
DESCRIPTION
pcp-python provides a way to run python scripts using a customisable python binary, rather
than embedding any particular version of python into each script.
This can be useful as it allows version-independent python code to be run anywhere. All
python modules shipped with PCP support versions 2.6 and later (in the python2 series),
and 3.3 and later (in the python3 release series).
Due to python monitoring and collecting scripts being relatively simple in PCP (not
requiring new modules, language features, etc), it has been possible to ensure they work
for all of the above python versions. Thus, it is common for PCP python scripts to use a
"shebang" line that invokes pcp-python as follows:
#!/usr/bin/pcp python
This allows the custom setting to be injected instead of a hard-coded python version,
while still allowing the user to override the python version as follows:
$ PCP_PYTHON_PROG=python3 /usr/bin/pcp python --version
Python 3.3.2
$ PCP_PYTHON_PROG=python2 /usr/bin/pcp python --version
Python 2.7.5
This is convenient for shipping identical scripts on multiple platforms, and for testing
different python versions with the one script (e.g. in the case where multiple versions of
python are installed, PCP_PYTHON_PROG can be set in the local environment to override the
global setting).
By default, the value of PCP_PYTHON_PROG from /etc/pcp.conf will be used. The default
value of this configuration parameter is set depending on some heuristics about the target
build platform. These heuristics favour the use of python3 in all recent releases of PCP,
for those platforms that support it.
PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory
names used by PCP. On each installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to specify an alternative
configuration file, as described in pcp.conf(5).
Use pcp-python online using onworks.net services
