.by file is written using python syntaxes, but with <, > and ;
check out abc.by for an example

To convert a program :

py by.py <filelocation>.by

To automatically execute after converting a program :

• Windows :

py by.py <fileloc>.by -e py

• Linux :

python3 by.py <fileloc>.by -e python3

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known errors :

• Requires a semicolon after comments, and after each line in a multiline string
• Conditional </> operators require a \ before the operator, for ex : if x < y should be written as if x \< y