来自python的epanet 2.0调用
EPANET2的Python项目详细描述
流行的城市排水模型epanet 2.0引擎的python接口。 EPANET2由美国环境保护局重新分配到公共领域。 此python包受assela pathirana的版权保护，并在gnu通用公共许可版本3下发布。
readme.txt
epanet 2.0 python调用接口
由于版本为0.4.0.1，库与Python3.0兼容
这是什么？
一个python包，允许用户调用python脚本中的所有epanet programmers toolkit函数。
安装
| Windows: | Download the MS Windows installer and run to install. Since version 0.4.0.1 “python wheels ” packages are also provided. So, the following command can also be used to install on windows ^{pr 1}$ |
|---|---|
| POSIX (e.g. Linux, OS-X): | |
Download source archive (zip file), extract and run (as root) ^{pr 2}$or just type ^{pr 3}$ |
用法：
>>> from epanet2 import epanet2 as et
>>> p="epanet2/examples/simple/"
>>> ret=et.ENopen(p+"Net3.inp",p+"Net3.rpt","")
| Example 1: | Retrieve simulation properties. |
|---|
网络的基本特性
>>> ret,result=et.ENgetcount(et.EN_LINKCOUNT)
>>> print(ret)
0
>>> print(result)
119
>>> ret,result=et.ENgetcount(et.EN_NODECOUNT)
>>> print(ret)
0
>>> print(result)
97
>>> node='105'
>>> ret,index=et.ENgetnodeindex(node)
>>> print(ret)
0
>>> print ("Node " + node + " has index : " + str(index))
Node 105 has index : 12
获取节点列表
>>> ret,nnodes=et.ENgetcount(et.EN_NODECOUNT)
>>> nodes=[]
>>> pres=[]
>>> time=[]
>>> for index in range(1,nnodes):
... ret,t=et.ENgetnodeid(index)
... nodes.append(t)
... t=[]
... pres.append(t)
>>> print (nodes) #doctest: +ELLIPSIS
... #doctest: +NORMALIZE_WHITESPACE
['10', '15', '20', '35', '40', '50', '60', ..., '275', 'River', 'Lake', '1', '2']
水力模拟
>>> et.ENopenH()
0
>>> et.ENinitH(0)
0
>>> while True :
... ret,t=et.ENrunH()
... time.append(t)
... # Retrieve hydraulic results for time t
... for i in range(0,len(nodes)):
... ret,p=et.ENgetnodevalue(i+1, et.EN_PRESSURE )
... pres[i].append(p)
... ret,tstep=et.ENnextH()
... if (tstep<=0):
... break
>>> ret=et.ENcloseH()
>>> print([round(x,4) for x in pres[0]]) #doctest: +ELLIPSIS
... #doctest: +NORMALIZE_WHITESPACE
[-0.6398, 40.1651, 40.891, 41.0433, ..., 0.569, -0.8864, 0.2997]
节点“10”处的压力
>>> ret,ind=et.ENgetnodeindex("10")
>>> print (ind)
1
>>> print([round(x,4) for x in pres[ind+1]]) # remember epanet count starts at 1.
... #doctest: +ELLIPSIS
... #doctest: +NORMALIZE_WHITESPACE
[12.5657, 12.9353, 13.4351, 14.0307, ..., 13.1174, 13.3985, 13.5478]
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