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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 RebuildHttpConnections(http):
 """Rebuilds all http connections in the httplib2.Http instance. httplib2 overloads the map in http.connections to contain two different types of values: { scheme string: connection class } and { scheme + authority string : actual http connection } Here we remove all of the entries for actual connections so that on the next request httplib2 will rebuild them from the connection types. Args: http: An httplib2.Http instance. """

    if getattr(http, 'connections', None):
        for conn_key in list(http.connections.keys()):
            if ':' in conn_key:
                del http.connections[conn_key]