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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 make_sqlalchemy_table(table, tablename, schema=None, constraints=True, metadata=None):
 """ Create an SQLAlchemy table definition based on data in `table`. Keyword arguments: table : table container Table data to use to infer types etc. tablename : text Name of the table schema : text Name of the database schema to create the table in constraints : bool If True use length and nullable constraints metadata : sqlalchemy.MetaData Custom table metadata """


    import sqlalchemy

    if not metadata:
        metadata = sqlalchemy.MetaData()

    sql_table = sqlalchemy.Table(tablename, metadata, schema=schema)
    cols = columns(table)
    flds = list(cols.keys())
    for f in flds:
        sql_column = make_sqlalchemy_column(cols[f], f,
                                            constraints=constraints)
        sql_table.append_column(sql_column)

    return sql_table