如何逐步运行Flask应用进行调试？

Question

I want to run IPython interactively while running my Flask app. I tried ipython -i app.py but I don't get a prompt until after the app exits. I want to do this so I can debug each step of the program. How can I run my app and be able to examine it?

Answer 1

The -i flag runs the given program and then puts you in an interactive session after it has run . There is no way to debug the program using this flag.

Instead, you want to use a debugger. python -m pdb app.py will start pdb , a console debugger. There are other debuggers available, such as the graphical one built into IDEs such as PyCharm and PyDev, or more advanced console ones such as pudb .

Answer 2

Implemented with thread

from flask import Flask                                                         
import thread
data = 'foo'
app = Flask(__name__)
@app.route("/")
def main():
    return data
def flaskThread():
    app.run()
if __name__ == "__main__":
    thread.start_new_thread(flaskThread,())

And open the IPython Command prompt and type the command run -i filename.py