What's the difference between str.isdigit, isnumeric and isdecimal in python?

Question

When I run these methods

s.isdigit()
s.isnumeric()
s.isdecimal()

I always got as output or all True, or all False for each value of s (whic

Answer 1

By definition, isdecimal() ⊆ isdigit() ⊆ isnumeric(). That is, if a string is decimal, then it'll also be digit and numeric.

Therefore, given a string s and test it with those three methods, there'll only be 4 types of results.

+-------------+-----------+-------------+----------------------------------+
| isdecimal() | isdigit() | isnumeric() |          Example                 |
+-------------+-----------+-------------+----------------------------------+
|    True     |    True   |    True     | "038", "੦੩੮", "０３８"           |
|  False      |    True   |    True     | "⁰³⁸", "