oemof.solph installation error

[HANSBIBI]

Hello community, after installing oemof.solph, I wanted to test the first example. Unfortunately I got an error message afterwards. What is my problem?

Traceback (most recent call last):
File "F:\python\0728\pf_oemof_0728.py", line 1, in
from oemof.solph import EnergySystem, Model, Bus, Flow, Source, Sink
ImportError: cannot import name 'Source' from 'oemof.solph' (G:\Python\Lib\site-packages\oemof\solph_init_.py)

add my pip list
Package Version

---

blinker 1.6.2
colorama 0.4.6
deepdiff 6.3.1
dill 0.3.7
networkx 3.1
numpy 1.25.1
oemof.network 0.5.0a1
oemof.solph 0.5.0
oemof.tools 0.4.2
ordered-set 4.1.0
packaging 23.1
pandapower 2.13.1
pandas 2.0.3
pip 23.1.2
ply 3.11
Pyomo 6.6.1
python-dateutil 2.8.2
pytz 2023.3
scipy 1.11.1
setuptools 65.5.0
six 1.16.0
tqdm 4.65.0
tzdata 2023.3

[HANSBIBI]

and the example
from oemof.solph import EnergySystem, Model, Bus, Flow, Source, Sink
from oemof.solph.components import GenericStorage

创建时间索引，假设有24个小时

time_index = range(24)

创建能源系统对象

es = EnergySystem(timeindex=time_index)

创建电力总线

electricity_bus = Bus(label="electricity")

创建风力发电机

wind_generator = Source(
label="wind_generator",
outputs={electricity_bus: Flow(nominal_value=100, variable_costs=0)},
)

创建电力线路

transmission_line = Flow(
label="transmission_line",
bus_in=electricity_bus,
bus_out=Bus(label="electricity_output"),
nominal_value=150,
variable_costs=0.1,
)

创建负荷

load = Sink(
label="load",
inputs={electricity_bus: Flow(nominal_value=80, fixed=True)},
)

将组件添加到能源系统

es.add(electricity_bus, wind_generator, transmission_line, load)

创建模型对象

optimization_model = Model(es)

求解模型

optimization_model.solve()

查看模型结果

print("Wind power production:")
print(wind_generator["sequences"])
print("Transmission line flow:")
print(transmission_line["sequences"])
print("Load demand:")
print(load["sequences"])

[p-snft]

Hi @HANSBIBI. You are using solph v0.5, the examples are for legacy versions of solph. For v0.5 (and following) we have moved them to the solph repository. See https://github.com/oemof/oemof-solph/tree/v0.5/examples for examples working with the version you have installed.