CODEWITHSUNDEEP
pythonflask
Rahul K P
Rahul K P

Reputation: 16081

How can I run my Flask app step by step to debug it?

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?

Upvotes: 1

Views: 1411

Answers (2)

Rahul K P
Rahul K P

Reputation: 16081

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

Upvotes: 0

davidism
davidism

Reputation: 127260

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.

Upvotes: 2

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