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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_source_link(file, line, display_text="[source]", **kwargs)->str:
    "Returns github link for given file"
    link = f"{SOURCE_URL}{file}#L{line}"
    if display_text is None: return link
    return f'<a href="{link}" class="source_link" style="float:right">{display_text}</a>'