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pythonfunctionchaining

python adding new methods to built-in types

How would I go about writing python functions that can be append to strings (or other object)?

for example: 

"FOO".lower()

How do they receive input? Are they generators?

I will happily read up on it, but I don't really know what I am looking for.

Solution

  • Strings are objects and thus have methods. lower() is one of them.

    You cannot add a custom method to str, unicode or any other builtin (written in C) classes - see Implementing a custom string method and Extending builtin classes in python