How Can I Reliably Convert Strings to Booleans in Python?

Converting Strings to Booleans in Python

Converting strings to booleans in Python can be trickier than it seems. While bool("") correctly evaluates to False, attempting to convert "False" to a boolean using bool returns True.

Solution:

To convert a string into a boolean, compare it directly to the desired true value. For example:

<code class="python">s == 'True'</code>

For checking against multiple true values, use the in operator:

<code class="python">s.lower() in ['true', '1', 't', 'y', 'yes', 'yeah', 'yup', 'certainly', 'uh-huh']</code>

Caution:

Using bool directly on strings should be avoided for parsing purposes. While empty strings evaluate to False, all other strings evaluate to True, regardless of their content.

The above is the detailed content of How Can I Reliably Convert Strings to Booleans in Python?. For more information, please follow other related articles on the PHP Chinese website!