C++调用python函数问题记录

问题1

# gm => excel
def export(gm, excel, select, unit, hide):
  ret = read_gm(gm)
  data = ret[0]
  channels = ret[1]
  msg = ret[2]
  if msg == 'ok':
    msg = write_excel(data, channels, excel, select, unit, hide)
  if msg == 'ok':
    os.system(f'"{excelfilepath}"')
  return msg

msg = export(gmfilepath, excelfilepath, exportselect, resistanceunit, hidecolumn)
print(msg)

分析：PyImport_ImportModule会调用最底下的代码，而export调用的传入参数未被初始化，故报错。

问题2

# gm => excel
def export(gm, excel, select, unit, hide):
  ret = read_gm(gm)
  data = ret[0]
  channels = ret[1]
  msg = ret[2]
  if msg == 'ok':
    msg = write_excel(data, channels, excel, select, unit, hide)
  if msg == 'ok':
    os.system(f'"{excelfilepath}"')
  return msg

分析：和问题1类似，excelfilepath未初始化。

问题3

如果 exe 目录下有 python311.dll，系统 Path 路径里又有 python，调用会失败。

1. 去掉 exe 目录下的 python311.dll；或
2. 用 Py_SetPythonHome 设置好 python 的执行文件夹。