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Exposes a parse() function to parse template strings.
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Parse a unicode template string and return a ParsedTemplate instance.
Arguments:
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delimiters: a 2-tuple of delimiters. Defaults to the package default.
Examples:
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>>> print(str(parsed).replace('u', '')) # This is an old hack.
['Hey ', _SectionNode(key='who', index_begin=12, index_end=21, parsed=[_EscapeNode(key='name'), '!'])]
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Parse a template string starting at some index.
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Create and return a non-section node for the parse tree.
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