![]() ![]() Python 3.6 added a new string formatting approach called formatted string literals or “f-strings”. #3 String Interpolation / f-Strings (Python 3.6+) ![]() I’ll tell you all about it in the next section. Starting with Python 3.6, there’s yet another way to format your strings. #Python string format codeThis is why I’d personally try to stick with str.format for new code moving forward. These alternatives also provide more powerful, flexible and extensible approaches to formatting text.” ( Source) Using the newer formatted string literals or the str.format() interface helps avoid these errors. Python has had awesome string formatters for many years but the documentation on them is far too theoretic and technical. “The formatting operations described here exhibit a variety of quirks that lead to a number of common errors (such as failing to display tuples and dictionaries correctly). Still, the official Python 3 documentation doesn’t exactly recommend “old style” formatting or speak too fondly of it: According to this discussion on the Python dev email list and this issue on the Python dev bug tracker, %-formatting is going to stick around for a long time to come. It is still supported in the latest versions of Python. While “old style” formatting has been de-emphasized, it has not been deprecated. It is the process of inserting a custom string or variable in predefined text. ![]() In Python 3, this “new style” string formatting is to be preferred over %-style formatting. String formatting is also known as String interpolation. It pays off to read up on this string formatting mini-language in the Python documentation. Let us take an example: num 12 result num num str 'The square of d is d' (num, result) print (str) The Output: The square of 12 is 144. This works very similarly to the printf statement in C. The format string syntax has become more powerful without complicating the simpler use cases. This is an old way for string formatting is still useful for simple operations. Now you need to pass a format spec by adding a :x suffix. This also shows that the syntax to format an int variable as a hexadecimal string has changed. name = name, errno = errno ) 'Hey Bob, there is a 0xbadc0ffee error!' ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |