[已解决]求问大佬让用户自定义某个值

123lqqq

这波属于赶鸭子上架了 我需要让用户自己输入他要的值，然后把xml文件中rhop0的值改成他需要的
我写的代码是这样的，明显不对,但是我也不知道怎么改

1. rhop0_user = input("please input value of rhop0: ")
   
2. print(type(rhop0_user))
   
3. rhop0_user = int(rhop0_user)
   
4. from xml.etree import ElementTree as ET
   
5. f = open(r'E:\DualSPHysics_v5.0.5\DualSPHysics_v5.0\examples\inletoutlet\0_inlet+dem\Casein_Def.xml')
   
6. xml_text = f.read()
   
7. root = ET.fromstring(xml_text)
   
8. f.close()
   
9. rhop0 = root.find('casedef').find('constantsdef').find('rhop0')
   
10. print(rhop0)
    
11. root.attrib
    
12. rhop0.set('value','rhop0_user')
    
13. root.attrib
    
14. definition = root.find('casedef').find('geometry').find('definition')
    
15. print(definition)
    
16. root.attrib
    
17. definition.set('dp','0.05')
    
18. tree = ET.ElementTree(root)
    
19. tree.write("Casein_Def.xml",encoding= 'utf-8')

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xml文件部分内容如下:

1. <case>
   
2.     <casedef>
   
3.         <constantsdef>
   
4.             <lattice bound="1" fluid="1" />
   
5.             <gravity x="0" y="0" z="-9.81" comment="Gravitational acceleration" units_comment="m/s^2" />
   
6.             <rhop0 value="1200" comment="Reference density of the fluid" units_comment="kg/m^3" />
   
7.             <hswl value="1" auto="false" comment="Maximum still water level to calculate speedofsound using coefsound" units_comment="metres (m)" />
   
8.             <gamma value="7" comment="Polytropic constant for water used in the state equation" />
   
9.             <speedsystem value="0" auto="true" comment="Maximum system speed (by default the dam-break propagation is used)" />
   
10.             <coefsound value="20" comment="Coefficient to multiply speedsystem" />
    
11.             <speedsound value="0" auto="true" comment="Speed of sound to use in the simulation (by default speedofsound=coefsound*speedsystem)" />
    
12.             
    
13.             <coefh value="0.866025" comment="Coefficient to calculate the smoothing length (h=coefh*sqrt(3*dp^2) in 3D)" />
    
14.             <cflnumber value="0.4" comment="Coefficient to multiply dt" />
    
15.         </constantsdef>
    
16.         <mkconfig boundcount="240" fluidcount="10" />
    
17.         <geometry>
    
18.             <definition dp="0.05" units_comment="metres (m)">
    
19.                 <pointmin x="-5" y="-5" z="-5" />
    
20.                 <pointmax x="10" y="20" z="20" />
    
21.             </definition>

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最佳答案

月排行榜 / 总排行榜

isdkz

2023-3-4 20:16:55

1. rhop0_user = input("please input value of rhop0: ")
   
2. print(type(rhop0_user))
   
3. # rhop0_user = int(rhop0_user)                    不要转成整数   
   
4. from xml.etree import ElementTree as ET
   
5. f = open(r'Casein_Def.xml')
   
6. xml_text = f.read()
   
7. root = ET.fromstring(xml_text)
   
8. f.close()
   
9. rhop0 = root.find('casedef').find('constantsdef').find('rhop0')
   
10. print(rhop0)
    
11. root.attrib
    
12. rhop0.set('value', rhop0_user)                    # rhop0_user 不要加引号
    
13. root.attrib
    
14. definition = root.find('casedef').find('geometry').find('definition')
    
15. print(definition)
    
16. root.attrib
    
17. definition.set('dp','0.05')
    
18. tree = ET.ElementTree(root)
    
19. tree.write("Casein_Def.xml",encoding= 'utf-8')

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跳转到最佳答案楼层

isdkz

1. rhop0_user = input("please input value of rhop0: ")
   
2. print(type(rhop0_user))
   
3. # rhop0_user = int(rhop0_user)                    不要转成整数   
   
4. from xml.etree import ElementTree as ET
   
5. f = open(r'Casein_Def.xml')
   
6. xml_text = f.read()
   
7. root = ET.fromstring(xml_text)
   
8. f.close()
   
9. rhop0 = root.find('casedef').find('constantsdef').find('rhop0')
   
10. print(rhop0)
    
11. root.attrib
    
12. rhop0.set('value', rhop0_user)                    # rhop0_user 不要加引号
    
13. root.attrib
    
14. definition = root.find('casedef').find('geometry').find('definition')
    
15. print(definition)
    
16. root.attrib
    
17. definition.set('dp','0.05')
    
18. tree = ET.ElementTree(root)
    
19. tree.write("Casein_Def.xml",encoding= 'utf-8')

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123lqqq

isdkz 发表于 2023-3-4 20:16

芜湖~谢谢您！你！是！我！滴！神！！！！