Python Django：“；类型为'的参数；int'；是不合适的”；在oracle/base.py的_rowfactory中

我正在尝试将Django应用程序连接到Oracle DB，但查询结果出现异常：

TypeError: argument of type 'int' is not iterable

异常位置：/opt/isep/venv/lib/python3.4/site-packages/django/db/backends/oracle/base.py，在第560行工厂中

def _rowfactory(row, cursor):
# Cast numeric values as the appropriate Python type based upon the
# cursor description, and convert strings to unicode.
casted = []
for value, desc in zip(row, cursor.description):
    if value is not None and desc[1] is Database.NUMBER:
        precision = desc[4] or 0
        scale = desc[5] or 0
        if scale == -127:
            if precision == 0:
                # NUMBER column: decimal-precision floating point
                # This will normally be an integer from a sequence,
                # but it could be a decimal value.
                if '.' in value:
                    value = decimal.Decimal(value)
                else:
                    value = int(value)
            else:
                # FLOAT column: binary-precision floating point.
                # This comes from FloatField columns.
                value = float(value)
        elif precision > 0:
            # NUMBER(p,s) column: decimal-precision fixed point.
            # This comes from IntField and DecimalField columns.
            if scale == 0:
                value = int(value)
            else:
                value = decimal.Decimal(value)
        elif '.' in value:
            # No type information. This normally comes from a
            # mathematical expression in the SELECT list. Guess int
            # or Decimal based on whether it has a decimal point.
            value = decimal.Decimal(value)
        else:
            value = int(value)
    elif desc[1] in (Database.STRING, Database.FIXED_CHAR,
                     Database.LONG_STRING):
        value = to_unicode(value)
    casted.append(value)
return tuple(casted)

值中的“

if.”行出现错误，因为
value=0

我使用的是：Python 3.4、Django 1.11、cx_Oracle 6.0

如何解决这个问题？
好的，我已经移除了我的静脉，然后创建了另一个。这次我安装了Django 1.11.15和cx_Oracle 6.0。一切似乎都很顺利。异常消失。
您能提供一个示例查询来进一步调查这个问题吗？只需简单的Django的Model.objects.all（）