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#!/usr/bin/env python3
# --------------------( LICENSE )--------------------
# Copyright (c) 2014-2025 Beartype authors.
# See "LICENSE" for further details.
'''
**Beartype string testing utilities** (i.e., callables testing whether passed
strings satisfy various conditions).
This private submodule is *not* intended for importation by downstream callers.
'''
# ....................{ IMPORTS }....................
# ....................{ TESTERS }....................
def is_str_float_or_int(text: str) -> bool:
'''
``True`` only if the passed string is a valid machine-readable
representation of either an integer or finite floating-point number.
Caveats
----------
This tester intentionally returns ``False`` for non-standard floating-point
pseudo-numbers that have no finite value, including:
* Not-a-numbers (i.e., ``float('NaN')`` values).
* Negative infinity (i.e., ``float('-inf')`` values).
* Positive infinity (i.e., ``float('inf')`` values).
Parameters
----------
text : str
String to be inspected.
Returns
----------
bool
``True`` only if this string is a valid machine-readable representation
of either an integer or finite floating-point number.
'''
assert isinstance(text, str), f'{repr(text)} not string.'
# Return true only if this text represents a finite number. See also:
# s.lstrip('-').replace('.','',1).replace('e-','',1).replace('e','',1).isdigit()
return text.lstrip(
'-').replace('.','',1).replace('e-','',1).replace('e','',1).isdigit()
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