I've come across a snippet of Python code that looks like this:
code = 'foo' % bar
...where foo is a string of JavaScript code that's being used in a callback, and bar is a dictionary.
Can someone explain what this means?
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1 Answer
The string is beeing formatted using the old %-formatting style.
The string likely contains sequences like %(foo)s that are being replaced by the dictionary. An example would be:
text = "Hello %(adjective)s World" % {"adjective": "beautiful"}
This would result in Hello beautiful World.
The text inside the parentheses denotes the keyword and the s after that denotes that it is a string. An alternative would be d for integers.
However using this method is not recommended anymore since f-strings and the str.format method provide better functionality.
Read more here.
