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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 tex_pdf_emitter(target, source, env):
 """An emitter for TeX and LaTeX sources when executing pdftex or pdflatex. It will accept graphics files of types .pdf, .jpg, .png, .gif, and .tif """

    (target, source) = tex_emitter_core(target, source, env, LatexGraphics)

    return (target, source)