Does IPython have a preparser?
On Thursday, July 9, 2020 at 11:43:36 PM UTC-7, Kwankyu wrote: > > Because of the preparser? > > On Thursday, July 2, 2020 at 9:19:58 AM UTC+9 John H Palmieri wrote: > >> >> >> On Wednesday, July 1, 2020 at 4:39:12 PM UTC-7, John H Palmieri wrote: >>> >>> >>> >>> On Wednesday, July 1, 2020 at 2:22:49 PM UTC-7, Antonio Rojas wrote: >>>> >>>> >>>> >>>> El miércoles, 1 de julio de 2020, 21:06:43 (UTC+2), John H Palmieri >>>> escribió: >>>>> >>>>> >>>>> Why so many deprecation warnings? I think they're coming from plain >>>>> Python; why doesn't Python print the warnings? >>>>> >>>>> >>>>> >>>> Because python ignores deprecation warnings, >>>> https://docs.python.org/3/library/warnings.html#default-warning-filter >>>> >>> >>> Thanks, that's helpful. But why does Sage print the warning so many >>> times? If I turn on Python's deprecation warnings, I just see one warning >>> message, not six of them. >>> >>> >> I guess this is in turn an IPython thing, although I don't know why >> IPython prints the warning 6 times, and also repeats my original command. >> With warnings enabled, I evaluated '\i' once: >> >> % PYTHONWARNINGS=always sage --ipython >> ... >> IPython 5.8.0 -- An enhanced Interactive Python. >> ? -> Introduction and overview of IPython's features. >> %quickref -> Quick reference. >> help -> Python's own help system. >> object? -> Details about 'object', use 'object??' for extra details. >> >> In [1]: '\i'<input>:1: DeprecationWarning: invalid escape sequence \i >> <input>:1: DeprecationWarning: invalid escape sequence \i >> <input>:1: DeprecationWarning: invalid escape sequence \i >> In [1]: '\i' >> >> <input>:1: DeprecationWarning: invalid escape sequence \i >> <input>:1: DeprecationWarning: invalid escape sequence \i >> <input>:1: DeprecationWarning: invalid escape sequence \i >> <ipython-input-1-aeb68ac32d93>:1: DeprecationWarning: invalid escape >> sequence \i >> '\i' >> Out[1]: '\\i' >> >> >> >> -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/81516c8f-1161-4507-b5a1-5c7198ffa49ao%40googlegroups.com.
