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adding MultiviewTextInput results in TypeError #205

teletypist opened this issue Jul 27, 2017 · 1 comment


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commented Jul 27, 2017

I tried building a basic Toga app from the tutorial 0 example, but when I substitute the button with a multitextinput it crashes with a TypeError. I have attached code and the resulting terminal output.

Running OSX 10.12.5 with Python 3

installed through Homebrew. Python is executed inside virtual environment.

Thanks for any help.

Source code:

import sys

print("python version: {}".format(sys.version))
print("toga version: {}".format(toga.__version__))

def build(app):
    box = toga.Box()
    textbox = toga.MultilineTextInput("This is a textbox")
    return box

def main():
    return toga.App("My App", 'org.pybee.helloworld', startup=build)

if __name__ == '__main__':


[GCC 4.2.1 Compatible Apple LLVM 8.1.0 (clang-802.0.42)]
toga version: 0.2.12
Traceback (most recent call last):
  File "/usr/local/Cellar/python3/3.6.2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/local/Cellar/python3/3.6.2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/", line 85, in _run_code
    exec(code, run_globals)
  File "/Users/frederick/Projects/scription/src/scription/", line 17, in <module>
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga_cocoa/", line 137, in main_loop
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga_cocoa/", line 129, in _startup
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga/interface/", line 125, in startup
    self.main_window.content = self._startup_method(self)
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga/interface/", line 144, in content
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga/interface/widgets/", line 313, in _update_layout
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga/interface/widgets/", line 324, in _update_child_layout
  File "/Users/frederick/Projects/scription/venv/lib/python3.6/site-packages/toga/interface/widgets/", line 316, in _update_layout
TypeError: _apply_layout() missing 1 required positional argument: 'layout'```

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commented Jul 27, 2017

Just found closed issue #187, I thought I was using the most recent pull from master but perhaps not.

@teletypist teletypist closed this Jul 27, 2017

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