Getting error TypeError: unsupported operand type(s) for &: 'list' and 'list'

[sbansal6]

Running the example code:-

import fang

di = fang.Di(namespace='.com.example.myproject')

@di.dependsOn('multiplier')
def multiply(n):
'''Multiply the given number n by some configured multiplier.'''
multiplier = di.resolver.unpack(multiply)
return multiplier * n

providers = fang.ResourceProviderRegister(namespace='.com.example.myproject')

@providers.register('multiplier')
def give_multiplier():
'''Give a multiplier of 2.'''
return 2

def main():
# Here at our program entry-point, we configure what set of providers
# will be used to meet our dependencies
di.providers.load(providers)
# Prints 10
print(multiply(5))

if name == 'main':
main()

[ncraike]

Hi @sbansal6.

Sorry for taking a bit to reply on this. I had a busy few days, and this is a hobby project for me.

I'm having trouble reproducing the TypeError you gave above.

How are you running the code above? Did you copy and paste it from the GitHub page? And how have you installed Fang? Do you install Fang with pip install fang? Are you running Python 3.3 or later?

The repository contains a copy of the example code in examples/introduction.py, so if you have cloned the repository and have Fang installed, the easiest way to test that example is by running python3 examples/introduction.py.

If I run that in my terminal, I get output like:

$ python3 examples/introduction.py
10

The example code just outputs 10.

I'm happy to help you debug the problem further. Would you mind posting what operating system you're using (Windows, macOS, Linux)? And the output of python3 --version and pip show fang?

[ncraike]

@sbansal6 Are you running this with Python 2?

[sbansal6]

yes , i am using python 2.7

…

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[ncraike]

Okay. Fang actually requires Python 3.4 or later.

I expected that the packaging settings I have in setup.py would prevent you installing Fang on Python 2.7, but maybe that is not the case.

How did you install Fang on your system?