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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 hook(module):
 """ Hook method to install the Instana middleware into Flask """

    if "INSTANA_DEV" in os.environ:
        print("==============================================================")
        print("Instana: Running flask hook")
        print("==============================================================")
    wrapt.wrap_function_wrapper('flask', 'Flask.__init__', wrapper)