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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_line_number(doc, wrange):
 """Get line number for given range object."""

    lineno = 1
    wrange.Select()
    wdFirstCharacterLineNumber = constants("wdFirstCharacterLineNumber")
    wdGoToLine = constants("wdGoToLine")
    wdGoToPrevious = constants("wdGoToPrevious")
    while True:
        curline = doc.Selection.Information(wdFirstCharacterLineNumber)
        doc.Selection.GoTo(wdGoToLine, wdGoToPrevious, Count=1, Name="")
        lineno += 1
        prevline = doc.Selection.Information(wdFirstCharacterLineNumber)
        if prevline == curline:
            break
    return lineno