PyCharm & console don't let me use local modules - python

I'm absolutely frustraded about the fact that I can't start my Python journey. I have a simple service which I use as a training with Python which is new for me.
I've downloaded PyCharm and as long as I had one file, everything was fine.
That I decided to to some structure and suddenly my project stopped working.
I have a structure like:
project/
project/employees
project/employees/__init__.py
project/employees/employees.py
project/server.py
project/venv/
project/venv/(...)
The project is a source root.
And yet I have something like this:
Traceback (most recent call last):
File "C:/Users/user/PycharmProjects/project/server.py", line 5, in <module>
from employees.employees import Employees, EmployeesName
File "C:\Users\user\PycharmProjects\project\employees\employees.py", line 4, in <module>
from server import db_connect
File "C:\Users\user\PycharmProjects\project\server.py", line 5, in <module>
from employees.employees import Employees, EmployeesName
ImportError: cannot import name 'Employees'
I tested this with VS Code and CMD and the same happend.
I would be grateful for any suggestions!
EDIT:
employees.py:
from flask_jsonpify import jsonify
from flask_restful import Resource
from server import db_connect
class Employees(Resource):
(...)
class EmployeesName(Resource):
(...)


The problem here is that you have a circular dependency.
In employees.py you import server.py; and vice versa.
You have to rearrange your .py files in order that not to happen anymore.

Related

Importing a function from a sibling folder in python producing strange errors

I'm have a script 'zigbot.py' which was working, but I'm restructuring to dockerize and now I'm questioning my ability to code at all. What I'm trying to do is have a telegram-bot container, and a 'web' container (FLASK), and a nginx container.
Next to zigbot.py I have a folder - 'bot', which has many of my scripts and functions in. Upon trying from bot.somescript import a_function I am getting error after error.
Project structure
zigbot
bot
bot
__init__.py
conversations.py
ct.py
Docerfile
funcs.py
pricedata.py
requirements.txt
util.py
zigbot.py
nginx
somestuff
web
app
migrations
templates
__init__.py
config.py
forms.py
functions.py
models.py
routes.py
signals.py
__init__.py
Dockerfile
requirements.txt
zigweb.py
When running the code below, I get a whole range of strange errors - the one listed below shows ImportError - it can't find 'onboard' in funcs, but its definitely there. Before the restructure, this was working. If I comment out 'onboard' it errors on every function in the list.
from bot.conversations import key_conversation
from bot.crypto_functions import satoshi_to_btc
from bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
onboarded_message, blank_signal_message, send_signal_format, get_or_create_user, signal_detected_keyboard, log_me
Traceback (most recent call last):
File "zigbot.py", line 15, in <module>
from bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
File "ZigBot\bot\bot\funcs.py", line 2, in <module>
from zigbot.web.app import db, app
File "ZigBot\bot\zigbot.py", line 15, in <module>
from bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
ImportError: cannot import name 'onboard'
So I tried adding a .bot.conversation for (relative?) import, but this produces an even weirder error. I've included the code, the error, then the function I'm trying to import below:
from .bot.conversations import key_conversation
from .bot.crypto_functions import satoshi_to_btc
from .bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
onboarded_message, blank_signal_message, send_signal_format, get_or_create_user, signal_detected_keyboard, log_me
from ..web.app import db
from ..web.app.models import User, Signal
Traceback (most recent call last):
File "zigbot.py", line 13, in <module>
from .bot.conversations import key_conversation
ModuleNotFoundError: No module named '__main__.bot'; '__main__' is not a package
conversations.py
# Initialise conversationHandler states
def key_conversation(cancel):
# Define keyboards
keyboard = [
[InlineKeyboardButton('Previous', callback_data='onboard:key'),
InlineKeyboardButton('Next', callback_data='onboard:alldone')]]
conversation_keyboard = InlineKeyboardMarkup(keyboard)
Finally, I think I'm getting closer to the problem, I go back to the way I think it's supposed to be imported. From bot.funcs import x,y,y... I look in funcs.py and this is how its importing some other code from my Flask web app, but it doesn't like it.
funcs.py
from telegram import InlineKeyboardButton, InlineKeyboardMarkup
from web.app import db, app
from web.app.models import User
Traceback (most recent call last):
File "zigbot.py", line 15, in <module>
from bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
File "ZigBot\bot\bot\funcs.py", line 2, in <module>
from web.app import db, app
ModuleNotFoundError: No module named 'web'
So I change the import to go up a level since web is two levels above bot - which contains the script I'm importing to. So zigbot>bot>bot>funcs.py trying to import from zigbot>web>app>
from telegram import InlineKeyboardButton, InlineKeyboardMarkup
from ..web.app import db, app
from ..web.app.models import User
import telegram
Traceback (most recent call last):
File "zigbot.py", line 15, in <module>
from bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
File "\ZigBot\bot\bot\funcs.py", line 2, in <module>
from ..web.app import db, app
ValueError: attempted relative import beyond top-level package
This obviously doesn't work either. Given my structure of having bot and web how do I get this to work? I even tried pulling the scripts out of the second 'bot' folder but I get the same issues. Finally, my weirdest error which might provide a clue to what I'm doing wrong, if I change the import on funcs.py to go one level up, rather than two, I get an even stranger traceback.
from telegram import InlineKeyboardButton, InlineKeyboardMarkup
from .web.app import db, app
from .web.app.models import User
import telegram
Traceback (most recent call last):
File "zigbot.py", line 15, in <module>
from bot.funcs import onboard, main_menu, new_message1, new_keyboard, onboarded_keyboard, \
File "C:\Users\phill\PycharmProjects\ZigBot\bot\bot\funcs.py", line 2, in <module>
from .web.app import db, app
ModuleNotFoundError: No module named 'bot.web'
For clarity I removed some 'C:\Users\phill' from the tracebacks before realising it was pointless to remove that.

I think there's a fundamental flaw in your split if you have library dependencies across the boundary. Assuming that there are no imports of bot-modules in your web container, I would suggest breaking off the shared code into a module named weblib or something (alongside the bot-, nginx- and web-folders).
You still should not try to import across would-be container boundaries however, so just make sure weblib is in your path or installed in your virtual environment or however you want to handle it. Basically, bot and web should run in separate environments and should have weblib as a dependency.
Someone wiser than me might be able to explain it better.

For relative imports to work all the packages and subpackages must be in the sys.path - to achieve this you should run from the top-level directory as in:
C:\Users\phill\zigbot>python -m bot.zigbot
This will make your current working dir (zigbot) available to sys.path and the subpackages will be resolved correctly

Newbie to Python: Imported Lib

I have this structure
02.SensorTag/
sensortag_example.py
bluepy/bluepy/sensortag.py
bluepy/bluepy/btle.py
So the sensortag_example.py is importing the sensortag.py
import bluepy
from bluepy.bluepy import sensortag
When I ran the code it complains about the import from the sensortag.
Traceback (most recent call last):
File "sensortag_example.py", line 2, in <module>
from bluepy.bluepy import sensortag
File "/home/pi/Development/02.SensorTag/bluepy/bluepy/__init__.py", line 3, in <module>
from . import sensortag
File "/home/pi/Development/02.SensorTag/bluepy/bluepy/sensortag.py", line 1, in <module>
from bluepy.btle import UUID, Peripheral, DefaultDelegate, AssignedNumbers
ImportError: No module named 'bluepy.btle'
I've tried to add a new path but it didin't work. If I move the program to the first folder bluepy and change the import to "from bluepy import sensortag" it works, but I'll need to import other libs so I don't want to let it in bluepy folder.
I am trying to run this code:
https://gist.github.com/atotto/ae603b962115eef703c0011d8e652ea3
Thanks and best regards,
Edu

Because sensortag.py is in the same directory as btle.py, add a . in front of the import
from .btle import UUID, Peripheral, DefaultDelegate, AssignedNumbers
This is known as a relative import: https://docs.python.org/2.5/whatsnew/pep-328.html

As both btle.py and sensortag.py are in the same directory so by looking at your error I am assuming that you tried to import it from previous directory. So place from .btle import UUID in sensortag.py should solve the issue.

You should create two init.py file.
02.SensorTag/
sensortag_example.py
bluepy/__init__.py
bluepy/bluepy/__init__.py
bluepy/bluepy/sensortag.py
bluepy/bluepy/btle.py

Error trying to import between python files

I have a basic parser app I'm building in Python. I monitors a folder and imports files when they are dropped there. I have a MongoDB that I'm trying to save the imports to. There's almost nothing to it. The problem happens when I try to include one of my class/mongo-document files. I'm sure it's a simple syntax issue I don't understand. I have all my requirements installed, and I'm running this in an virtual env. This is my first python app though, so it's likely something I'm not seeing.
My file structure is
application.py
requirements.txt
__init__.py
-services
parser.py
__init__.py
-models
hl7message.py
__init__.py
Here is application.py
from mongoengine import connect
import os, os.path, time
from services import parser
db = connect('testdb')
dr = 'C:\\Imports\\Processed'
def processimports():
while True:
files = os.listdir(dr)
print(str(len(files)) + ' files found')
for f in files:
msg = open(dr + '\\' + f).read().replace('\n', '\r')
parser.parse_message(msg)
print('waiting')
time.sleep(10)
processimports()
requirements.txt
mongoengine
hl7
parser.py
import hl7
from models import hl7message
def parse_message(message):
m = hl7.parse(str(message))
h = hl7message()
hl7message.py
from utilities import common
from application import db
import mongoengine
class Hl7message(db.Document):
message_type = db.StringField(db_field="m_typ")
created = db.IntField(db_field="cr")
message = db.StringField(db_field="m")
If I don't include the hl7message class in the parser.py it runs fine, but as soon as I include it I get the error, so I'm sure it has something to do with that file. The error message though isn't to helpful. I don't know if I've got myself into some kind of include loop or something.
Sorry, stack trace is below
Traceback (most recent call last):
File "C:/OneDrive/Dev/3/Importer/application.py", line 3, in <module>
from services import parser
File "C:\OneDrive\Dev\3\Importer\services\parser.py", line 2, in <module>
from models import hl7message
File "C:\OneDrive\Dev\3\Importer\models\hl7message.py", line 2, in <module>
from application import db
File "C:\OneDrive\Dev\3\Importer\application.py", line 23, in <module>
processimports()
File "C:\OneDrive\Dev\3\Importer\application.py", line 17, in processimports
parser.parse_message(msg)
AttributeError: module 'services.parser' has no attribute 'parse_message'

This is a circular import issue. Application.py imports parser, which imports h17 which imports h17message, which imports application which runs processimports before the whole code of the parser module has been run.
It seems to me that service modules should not import application. You could create a new module common.py containing the line db = connect('testdb') and import db from common both in application.py and in h17message.

ImportError: cannot import name SlotMap

I am encountering an import error
Traceback (most recent call last):
File "C:\Users\bartis\Desktop\Python\TEC-KB\SlotMapper.pyw", line 9, in <module>
from SlotMapper import SlotMap
File "C:\Users\bartis\Desktop\Python\TEC-KB\SlotMapper.pyw", line 9, in <module>
from SlotMapper import SlotMap
ImportError: cannot import name 'SlotMap
This should be a straightforward issue, but I can’t seem to find the problem. If I place the SlotMapper.py file in the same directory as the GUI I am using the import of SlotMap occurs without error. If I move the file to a directory under the current working directory and add - sys.path.append(os.path.join(os.getcwd(), 'appLib')) I receive the error above. See import statements and modification of PYTHONPATH below. I know the PYTHONPATH has been modified after I checked it from the debugger. I also know since there are other files under appLib required for the GUI to operate. Finally, I have checked all of the imported files for a circular reference and find none… So stuck. Any suggestions welcome
import os
import sys
sys.path.append(os.path.join(os.getcwd(), 'appLib', 'KB-GUI'))
sys.path.append(os.path.join(os.getcwd(), 'appLib'))
from tkinter import *
from SlotMapper import SlotMap
from ShelfTypeSelection import ShelfTypeSelector
from PackTypeSelection import PackTypeSlotMappingSelector
from EntryWidgets import EntryBase, ShelfSlotEntry

The reason this is not working is because your file is named SlotMapper.pyw. The line
from SlotMapper import SlotMap
is trying to import SlotMap from your current file, hence the error. Try renaming your file to slotmapper_test.pyw or something like that, and everything should work as expected. You don't want your code files to have the same names as any modules you're trying to import, as the import mechanism will try to find the classes/functions there first, instead of searching your modules first.

Python App Engine endpoints_proto_datastore ImportError

So I have the endpoints_proto_datastore folder at the root of my project and yet I get this error each time I try to run it....
File "C:\pythonworkspace\...\endpoints_proto_datastore\utils.py", line 8, in <module>
from endpoints_proto_datastore.ndb import model
ImportError: cannot import name model
Anyone have any ideas?

I think you should use
from endpoints_proto_datastore.ndb import EndpointsModel

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