[Python] Add a new line to a string in Python for email message (not print statement)

I need to send an smtp message, which is created dynamically in code. But inserting new line character "\n" does not work because I am not using the "print" function.

I searched for an existing question but did not find one. I found this post but all responses refer to print, and anyway the content is disputed.

x = "line one\n line two"

x
Out[105]: 'line one\n line two'


How can I create a string such that the string value (not using print or writing to a file) is like this?

line one
line two

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