Does Python Offer String Interpolation Like Ruby?

Is There a Python Equivalent to Ruby's String Interpolation?

Ruby's string interpolation allows for concise embedding of expressions in strings, as seen in the example:

name = "Spongebob Squarepants"
puts "Who lives in a Pineapple under the sea? \n#{name}."

However, Python's string concatenation may appear verbose in comparison.

Python 3.6 String Interpolation

Python 3.6 introduces literal string interpolation similar to Ruby's:

name = "Spongebob Squarepants"
print(f"Who lives in a Pineapple under the sea? {name}.")

Pre-3.6 Alternatives

Prior to 3.6, several alternative approaches can be used:

• % Operator:

name = "Spongebob Squarepants"
print("Who lives in a Pineapple under the sea? %(name)s." % locals())

• .format() Method:

name = "Spongebob Squarepants"
print("Who lives in a Pineapple under the sea? {name!s}.".format(**locals()))

• string.Template Class:

tmpl = string.Template("Who lives in a Pineapple under the sea? $name.")
print(tmpl.substitute(name="Spongebob Squarepants"))

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