iOS build errors (SyntaxWarning: "is" with a literal. Did you mean "==")

[Eleanor Paul]

Hi,

I'm trying to build an app for iOS using Kivy but have run into an error that has stumped me.

I am able to install all required packages, and create the Xcode project, but when I try to build it in Xcode, I get the following error messages:

Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/hostpython3/x86_64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:652: SyntaxWarning: "is" with a literal. Did you mean "=="?

  if 1 is 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/hostpython3/x86_64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:653: SyntaxWarning: "is not" with a literal. Did you mean "!="?

  if 1 is not 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/hostpython3/x86_64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:656: SyntaxWarning: "is" with a literal. Did you mean "=="?

  if 1 < 1 > 1 == 1 >= 1 <= 1 != 1 in 1 not in 1 is 1 is not 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/python3/arm64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:652: SyntaxWarning: "is" with a literal. Did you mean "=="?

  if 1 is 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/python3/arm64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:653: SyntaxWarning: "is not" with a literal. Did you mean "!="?

  if 1 is not 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/python3/arm64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:656: SyntaxWarning: "is" with a literal. Did you mean "=="?

  if 1 < 1 > 1 == 1 >= 1 <= 1 != 1 in 1 not in 1 is 1 is not 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/python3/x86_64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:652: SyntaxWarning: "is" with a literal. Did you mean "=="?

  if 1 is 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/python3/x86_64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:653: SyntaxWarning: "is not" with a literal. Did you mean "!="?

  if 1 is not 1: pass

/Users/eleanorpaul/Documents/kivy-ios/photogens-ios/YourApp/build/python3/x86_64/Python-3.8.2/Lib/lib2to3/tests/data/py3_test_grammar.py:656: SyntaxWarning: "is" with a literal. Did you mean "=="?

  if 1 < 1 > 1 == 1 >= 1 <= 1 != 1 in 1 not in 1 is 1 is not 1: pass

Command PhaseScriptExecution failed with a nonzero exit code

When I go and edit the file triggering the error and run the program again, the file reverts back to its original state. I also cannot add or remove items from the directory, as it reverts back to its original state. Has anyone encountered this, and how did you fix it? Thanks!