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list.pop() in a list with 'undefined' returned from a function raises IndexError #901
Description
Hi,
I encountered an error in list.pop() in Transcrypt3.9.4. It had no problem in previous versions. When a list contains an element 'undefined' returned from a function, list.pop() raises IndexError. The return command with no argument returns None in Python. But, 'undefined' is returned in Transcrypt3.9.4.
test code:
sMsg= "list.pop() in a list with 'undefined' returned from a function raises IndexError in Transcrypt3.9.4"
def x():
return # Python returns None, but Transcrypt3.9.4 returns 'undefined'
def main():
print('\n'+sMsg)
l= [x(), x(), x()]
print(l)
print(l.pop(0))
if __name__ == '__main__':
main()
output:
list.pop() in a list with 'undefined' returned from a function raises IndexError in Transcrypt3.9.4
msgWhileLoading.js:64 [None, None, None]
localhost/:1 Uncaught Function {__args__: Array(1), stack: 'Error\n at Array.py_pop (https://localhost:8443/…/compiled.DEBUG/main_frontend.js:6:2', __class__: ƒ}
The exception can be caught by try... except IndexError.
Thanks.
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