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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 buildTreeFromAlignment(filename,WorkingDir=None,SuppressStderr=None):
 """Builds a new tree from an existing alignment filename: string, name of file containing the seqs or alignment """

    app = Clustalw({'-tree':None,'-infile':filename},SuppressStderr=\
        SuppressStderr,WorkingDir=WorkingDir)
    app.Parameters['-align'].off()
    return app()