Hello! For example I have variable p in sage notebook. I need my class can find out the name of variable:

```
sage: p = 3
sage: my_class(p)
ans: 'p'
```

How to implement this feature? Thanks.

1 | initial version |

Hello! For example I have variable p in sage notebook. I need my class can find out the name of variable:

```
sage: p = 3
sage: my_class(p)
ans: 'p'
```

How to implement this feature? Thanks.

2 | No.2 Revision |

Hello! For example I have variable p in sage notebook. I need my class can find out the name of variable:

```
sage: p = 3
sage: my_class(p)
ans: 'p'
```

How to implement this feature? ~~Thanks.~~Thanks.
P.S.: sorry if my english isn't good.

3 | retagged |

```
sage: p = 3
sage: my_class(p)
ans: 'p'
```

How to implement this feature? Thanks. P.S.: sorry if my english isn't good.

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