C#调用Python代码
C#中,如果碰到需要调用Python代码时,一种方法是使用IronPython,不过这种方法太繁琐太累,特别是碰到Python代码中带有大量的第三方包,就会一直报错,提示缺少相应模块,这种方法太low,只支持Python2代码,果断摒弃。推荐另一种方法是用pyinstaller打包Python程序,会自动将程序中引用的第三方包也打包进去,Python3.X随便用,很方便。pyinstaller怎么安装就不用说了,下面介绍下pyinstaller打包的过程和c#调用的过程。
1、现在,在你的电脑桌面有一个Python文件(名字为secondcompare.py)需要打包,里面的代码如下:
import difflib import pandas as pd import sys def compare(fundname, securityname): ratio = difflib.SequenceMatcher(None, fundname, securityname).ratio() return ratio def second(fundname,securityname_string): securityname_list = [] if '\n' in securityname_string: fund = securityname_string.split('\n') for line in fund: if len(line) > 0: line = line.strip() line = line.rstrip('\r') securityname_list.append(line) else: securityname_list.append(securityname_string) ratio_list = [(fundname, securityname, compare(fundname, securityname)) for securityname in securityname_list] pd_result = pd.DataFrame(ratio_list, columns=['FundName', 'SecurityName', 'Ratio']).sort_values(by='Ratio', ascending=False) return pd_result.head(1).values.tolist()[0][1] if __name__=='__main__': # fundname="Ivy VIP High Income II" # securityname_string='''Janus Henderson VIT Overseas Portfolio: Service Shares\n # Janus Henderson VIT Forty Portfolio: Service Shares\n # Fidelity Variable Insurance Products Fund - VIP High Income Portfolio: Service Class # ''' fundname=sys.argv[1] securityname_string=sys.argv[2] a=second(fundname,securityname_string) print(a)
2、打开cmd命令窗口,先执行cd C:\Users\jlin10\Desktop进入到桌面路径(用户名自己改),然后执行pyinstaller -F -i icon.ico secondcompare.py,pyinstaller的各个参数设置可以参考https://blog.csdn.net/weixin_39000819/article/details/80942423。然后cmd就开始跑,到最后提示打包成功,结果在桌面生成了一个与Python文件同名的spec文件和三个文件夹__pycache__、build、dist,打包好的exe程序就放在dist文件夹里。
3、接下来在C#中调用这个secondcompare.exe,把第2步生成的四个东西剪切到C#的debug文件夹里,引用using System.Diagnostics;,输入以下代码:
string temppath = System.AppDomain.CurrentDomain.BaseDirectory.ToString(); Process p = new Process(); p.StartInfo.FileName = temppath + "\\dist\\secondcompare.exe"; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardInput = true; p.StartInfo.CreateNoWindow = true; string arg1="Ivy VIP High Income II"; string arg2="Janus Henderson VIT Overseas Portfolio: Service Shares\nJanus Henderson VIT Forty Portfolio: Service Shares\nFidelity Variable Insurance Products Fund - VIP High Income Portfolio: Service Class"; p.StartInfo.Arguments ="\"" + arg1 + "\"" + " " + "\"" + arg2+ "\""; p.Start(); string output = p.StandardOutput.ReadToEnd(); p.WaitForExit(); p.Close(); MessageBox.Show(output);
其中,参数间是用空格分隔的,这里两个参数都带有空格,不能直接相连,要先用"\""括起来,中间再用空格相连。
最后,附上Python代码文件和用到的图标。