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Added context manager for sample insertion #13

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Added context manager for sample insertion #13

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17 changes: 9 additions & 8 deletions notebook/context manager/hands_on/1_microscope_script.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,13 @@
scan_sample, # Scan sample currently in the microscope
)

@contextmanager
def sample_inserted(microscope_state):
insert_sample(microscope_state)
try:
yield
finally:
remove_sample(microscope_state)

@contextmanager
def do_stuff_under_vacuum(microscope_state):
Expand All @@ -33,14 +40,8 @@ def do_stuff_under_vacuum(microscope_state):
# Rewrite this script using the two context managers.
microscope_state = connect_to_microscope()

activate_vacuum_pump(microscope_state)
try:
insert_sample(microscope_state)
try:
with do_stuff_under_vacuum(microscope_state):
with sample_inserted(microscope_state):
sample_image = scan_sample(microscope_state)
finally:
remove_sample(microscope_state)
finally:
deactivate_vacuum_pump(microscope_state)

release_microscope(microscope_state)