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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 create_WCSname(wcsname):
 """ Verify that a valid WCSNAME has been provided, and if not, create a default WCSNAME based on current date. """

    if util.is_blank(wcsname):
        ptime = fileutil.getDate()
        wcsname = "User_"+ptime

    return wcsname