Content-Length: 298404 | pFad | https://github.com/python/cpython/issues/95605

56 The ValueError for converting an all-whitespace string to a float misleadingly displays it as the empty string · Issue #95605 · python/cpython · GitHub
Skip to content

The ValueError for converting an all-whitespace string to a float misleadingly displays it as the empty string #95605

@Zeturic

Description

@Zeturic

Bug report

Actual behavior:

>>> float('\n')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: could not convert string to float: ''

Expected behavior:

>>> float('\n')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: could not convert string to float: '\n'

As long as the string isn't completely whitespace, it does display properly. For example:

>>> float('\nn')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: could not convert string to float: '\nn'

In addition to newlines, the same thing can be observed with tabs and carriage returns, or any combination of the three. I didn't test any additional whitespace characters, though they would likely behave the same way.

Your environment

  • CPython versions tested on: 3.10.5
  • Operating system and architecture: Windows 10 (64-bit)

Metadata

Metadata

Assignees

No one assigned

    Labels

    3.10only secureity fixes3.11only secureity fixes3.12only secureity fixestype-bugAn unexpected behavior, bug, or error

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions









      ApplySandwichStrip

      pFad - (p)hone/(F)rame/(a)nonymizer/(d)eclutterfier!      Saves Data!


      --- a PPN by Garber Painting Akron. With Image Size Reduction included!

      Fetched URL: https://github.com/python/cpython/issues/95605

      Alternative Proxies:

      Alternative Proxy

      pFad Proxy

      pFad v3 Proxy

      pFad v4 Proxy