micropython/tests/basics/try_finally_loops.py

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Python
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# Test various loop types, some may be implemented/optimized differently
while True:
try:
break
finally:
print('finally 1')
for i in [1, 5, 10]:
try:
continue
finally:
print('finally 2')
for i in range(3):
try:
continue
finally:
print('finally 3')
# Multi-level
for i in range(4):
print(i)
try:
while True:
try:
try:
break
finally:
print('finally 1')
finally:
print('finally 2')
print('here')
finally:
print('finnaly 3')
# break from within try-finally, within for-loop
for i in [1]:
try:
print(i)
break
finally:
print('finally 4')
# Test unwind-jump where there is nothing in the body of the try or finally.
# This checks that the bytecode emitter allocates enough stack for the unwind.
for i in [1]:
try:
break
finally:
pass
# The following test checks that the globals dict is valid after a call to a
# function that has an unwind jump.
# There was a bug where an unwind jump would trash the globals dict upon return
# from a function, because it used the Python-stack incorrectly.
def f():
for i in [1]:
try:
break
finally:
pass
def g():
global global_var
f()
print(global_var)
global_var = 'global'
g()