This puzzles me: evaluating '\i' in Python 3 just gives '\i'. Same with IPython. Evaluating it in Sage prints many warning messages: the following is from a fresh Sage session, and I only evaluated '\i' once, despite the appearance:
% sage ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version 9.2.beta2, Release Date: 2020-06-26 │ │ Using Python 3.7.7. Type "help()" for help. │ └────────────────────────────────────────────────────────────────────┘ ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ Warning: this is a prerelease version, and it may be unstable. ┃ ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛ sage: '\i'<input>:1: DeprecationWarning: invalid escape sequence \i <input>:1: DeprecationWarning: invalid escape sequence \i <input>:1: DeprecationWarning: invalid escape sequence \i sage: '\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' '\\i' sage: Why so many deprecation warnings? I think they're coming from plain Python; why doesn't Python print the warnings? -- John -- 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/0a45ea8f-0062-4aad-b4d9-0b12a175daf9o%40googlegroups.com.
