1 | initial version |

You can find the function source like this:

sage: ZZ.__contains__.__doc__ 'File: sage/structure/parent.pyx (starting at line 950)...

I don't know if this will work generally. Also, here are listed many operators with their corresponding names.

2 | No.2 Revision |

You can find the function source like this:

```
sage: ZZ.__contains__.__doc__
'File: sage/structure/parent.pyx (starting at line
```~~950)...~~950)...

I don't know if this will work generally. Also, here are listed many operators with their corresponding names.

3 | No.3 Revision |

You can find the function source like this:

```
sage: ZZ.__contains__.__doc__
'File: sage/structure/parent.pyx (starting at line 950)...
```

and what object it belongs to with `ZZ.__contains__.__objclass__`

(and then you can do `ZZ.__contains__.__objclass__??`

). I don't know if this will work ~~generally.
~~generally.

Also, here are listed many operators with their corresponding names.

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