python - Jupyter method not allowed: why does this flag appear in my notebook menu? -


i'm starting learn python , i'm following mooc using jupyter, seems great tool. it's composed of several questions, each 1 requiring write piece of code.

i submit code on regulary basis know particular notebook works. have orange "method not allowed" flag top right on browser:

                                      enter image description here

when click on it disappears while , come back. code chunks executed without error.

how informations how solve issue ?

edit : wasn't code written in notebook. see answer below.

thanks :)

i figured out case :

  • this flag meant command jupyter menu somehow failed/was rejected (e.g. save & checkpoint @ moment login session had expired)
  • when using automatic commands (e.g. auto-save), can appear randomly , hard understand
  • it had no link code in notebook

this issue might have been caused fact used jupyter locally personal purposes, @ same time used mooc's jupyter.

reloading page fixed issue lost pieces of code wrote , wasn't able download file before reloading (it failed too), beware!


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