C++ : Trigger a python script stored on my machine, from inside a C++ script
I would like to trigger a python script from my C++ script. The python script is independent, I do not need to pass it anything from C++, I also do not need anything returned to C++.
I would also like to pause execution of the C++ script until the python script has finished.
I have tried the embedding solutions and the wrapping solutions offered online, but I am looking for something much simpler.
I have attempted the following.
include cstdlib system("py "C:\path\python_script.py"");
This attempt has problems with the double quotation mark syntax. I then attempted this to deal with the double quotation mark probem.
include cstdlib system("py " + char(34) + "C:\path\python_script.py" + char(34));
I then received the error "expression must have integral or unscoped enum type". It seems as though you can't concatenate strings this way in C++? For my final attempt, I tried to concatenate the string in pieces.
include cstdlib string path1 = "py "; string path2 = "C:\path\python_script.py"; string path = python_path1 + char(34) + python_path2 + char(34); system(path);
I now receive the error "no suitable conversion function from "std::string" to "const char" exists". Any help would be greatly appreciated.
As other answer tell you add \ to escape the " and also double escape your \ path separator :
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You can try
This way you escape the quotation mark and can write it into a string.
Have a look at this post
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Try string stream
#include <sstream> std::stringstream ss; ss << "py "; ss << "\"C:\path\python_script.py\""; system(ss.str().c_str());
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- This has nothing to do with python. Remove the python tag
- The last example, where you use std::string will work if you pass the argument as
path.c_str(). This returns the
- stringstream is overkill for a problem that can simply be solved by character escaping...