Ram Rachum wrote:
1. I'm making a program that lets people lease machines. They can issue
a command to lease 7 machines. ... If everything goes fine, I do pop_all on
the exit stack so it doesn't get exited and the machines stay leased,
Seems to me that would be done more easily and clearly
without involving a context manager at all:
machines = []
try:
for i in range(num_machines_required):
machines.append(lease_machine())
except AllMachinesInUseError:
for machine in machines:
release_machine(machine)
del machines[:]
A context manager is a tool to be used if it helps. If it
doesn't help, don't be afraid to not use it!
2. I have a test suite that creates a temporary folder to put files that
are used by the test. ... But, if the test fails I want to
move the temporary folder away into a dedicated folder
Again, don't use a context manager, just write a try-except
that does what you want.
--
Greg
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