Pyomo导入报错：module 'pyomo.common'无'errors'属性求助

问题现象 #

在Python 3.12环境中使用Pyomo建模，执行from pyomo.environ import *时触发AttributeError，错误提示为module 'pyomo.common' has no attribute 'errors'。

触发报错的代码 #

from pyomo.environ import *

model = ConcreteModel()

# Variables
model.x = Var(range(len(wh_capacities_df)), within=NonNegativeReals)

# Objective
model.obj = Objective(expr=sum((model.x[i] - demand_per_day[i])**2 for i in range(len(demand_per_day))), sense=minimize)

# Constraints
model.constraints = ConstraintList()
for i in range(len(wh_capacities_df)):
    model.constraints.add(model.x[i] <= wh_capacities_df['Daily Capacity '].iloc[i])

# Solve
SolverFactory('glpk').solve(model)

# Display results
for i in range(len(wh_capacities_df)):
    print(f"Optimal capacity for plant {wh_capacities_df['Plant ID'].iloc[i]}: {model.x[i].value}")

完整错误信息 #

{
    "name": "AttributeError",
    "message": "module 'pyomo.common' has no attribute 'errors'",
    "stack": "---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[32], line 1
----> 1 from pyomo.environ import *
      3 model = ConcreteModel()
      5 # Variables

File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\pyomo\environ\__init__.py:86
     82         pkg = _sys.modules[pname]
     83         pkg.load()
----> 86 _import_packages()
     88 #
     89 # Expose the symbols from pyomo.core
     90 #
     91 from pyomo.dataportal import DataPortal

File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\pyomo\environ\__init__.py:66, in _import_packages()
     64 pname = _package + '.plugins'
     65 try:
----> 66     _do_import(pname)
     67 except ImportError:
     68     exctype, err, tb = _sys.exc_info()  # BUG?

File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\pyomo\environ\__init__.py:18, in _do_import(pkg_name)
     17 def _do_import(pkg_name):
----> 18     importlib.import_module(pkg_name)

File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.1520.0_x64__qbz5n2kfra8p0\Lib\importlib\__init__.py:90, in import_module(name, package)
     88             break
     89         level += 1
----> 90 return _bootstrap._gcd_import(name[level:], package, level)

File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\pyomo\core\__init__.py:83
     69 from pyomo.core.expr.symbol_map import SymbolMap
     70 from pyomo.core.expr import (
     71     numvalue,
     72     numeric_expr,
   (...)
     81     calculus,
     82 )
----> 83 from pyomo.core import expr, util, kernel
     85 from pyomo.core.expr.numvalue import (
     86     nonpyomo_leaf_types,
     87     PyomoObject,
   (...)
     96     ZeroConstant,
     97 )
     98 from pyomo.core.expr.boolean_value import (
     99     as_boolean,
    100     BooleanConstant,
    101     BooleanValue,
    102     native_logical_values,
    103 )

File pyomo\\core\\util.pyx:19, in init pyomo.core.util()

File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\pyomo\core\base\__init__.py:38
     18 from pyomo.core.expr.numvalue import (
     19     nonpyomo_leaf_types,
     20     native_types,
   (...)
     29     ZeroConstant,
     30 )
     31 from pyomo.core.expr.boolean_value import (
     32     as_boolean,
     33     BooleanConstant,
     34     BooleanValue,
     35     native_logical_values,
     36 )
----> 38 from pyomo.core.base.component import name, Component, ModelComponentFactory
     39 from pyomo.core.base.componentuid import ComponentUID
     40 from pyomo.core.base.config import PyomoOptions

File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\pyomo\core\base\component.py:79
     74 @deprecated(msg="The cname() function has been renamed to name()", version='5.6.9')
     75 def cname(*args, **kwds):
     76     return name(*args, **kwds)
----> 79 class CloneError(pyomo.common.errors.PyomoException):
     80     pass
     83 class ComponentBase(PyomoObject):

AttributeError: module 'pyomo.common' has no attribute 'errors'"
}

已尝试的无效操作 #

• 更新Pyomo至6.7.3版本
• 降级Pyomo至5.7.3版本
• 检查包冲突

可行解决方法 #

1. 彻底卸载Pyomo及其关联包
   执行以下命令完全移除已安装的Pyomo组件：

   pip uninstall -y pyomo pyomo.common pyomo.core pyomo.environ
   

2. 清理残留文件
   找到Python site-packages目录（示例路径：~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages），删除所有以pyomo开头的文件夹和对应的.dist-info文件夹，避免残留文件导致版本冲突。

3. 创建并激活虚拟环境（推荐）
   虚拟环境能隔离全局包的干扰，执行以下命令创建：

   python -m venv pyomo_env
   # Windows系统激活
   pyomo_env\Scripts\activate
   # Linux/macOS系统激活
   source pyomo_env/bin/activate
   

4. 重新安装兼容版本
   Python 3.12对Pyomo的兼容性在6.8.0及以上版本中得到修复，执行安装命令：

   pip install pyomo>=6.8.0
   

5. 验证安装
   在激活的虚拟环境中运行以下代码，确认Pyomo可正常导入：

   from pyomo.environ import ConcreteModel, Var, Objective, ConstraintList, SolverFactory
   print("Pyomo导入成功")
   

内容的提问来源于stack exchange，提问作者nuwan desilva