# ambiguous-variable-name (E741)
Derived from the **pycodestyle** linter.
## What it does
Checks for the use of the characters 'l', 'O', or 'I' as variable names.
## Why is this bad?
In some fonts, these characters are indistinguishable from the
numerals one and zero. When tempted to use 'l', use 'L' instead.
## Reason to ignore in LyX?
With appropriated fonts that is not an issue. In our case we just use
the 'l', in particular in the context of iterators: 'i', 'j', 'k', 'l'.
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