unable to import class and method in python

Question

I have two files practice.py and weatherui.py.

I am importing practice in weatherui.py and using its functions. I now want to import weatherui into practice.py and specifically the class UiMainWindow which is in the weatherui.py.

weatherui.py (only the imports are mentioned):

from PyQt5 import QtCore, QtGui, QtWidgets
import practice

information = practice.get_weather_data(practice.generate_url(practice.new_url, practice.lat, practice.lon))
print(information)

class Ui_MainWindow(object):

practice.py:

from datetime import datetime
import requests
import mysql.connector
from weatherui import Ui_MainWindow     //this causes the traceback 

url = 'https://api.openweathermap.org/data/2.5/weather?q='
new_url = 'https://api.openweathermap.org/data/2.5/onecall?'
city_input = Ui_MainWindow.clickMethod().capitalize()
apiKey = '82e2832b8f0eac296c9e75cb93d03317'
theUrl = url + city_input + '&appid=' + apiKey;

r = requests.get(theUrl)
data = r.json()
lat = data['coord']['lat']
lon = data['coord']['lon']
city_name = data['name']


def generate_url(url, lat, lon):
    return url + 'lat=' + str(lat) + '&lon=' + str(lon) + '&exclude={part}' + '&appid=' + apiKey
    

def get_weather_data(url):
    r = requests.get(url)
    data = r.json()
    main_desc = data['current']['weather'][0]['main']
    temp_main = data['current']['temp']
    feels_like = data['current']['feels_like']
    pressure = data['current']['pressure']
    humidity = data['current']['humidity']
    wind_speed = data['current']['wind_speed']

    daily = data['daily']
    dt1 = datetime.fromtimestamp(daily[1]['dt']).strftime('%d-%m-%Y')
    dt2 = datetime.fromtimestamp(daily[2]['dt']).strftime('%d-%m-%Y')
    dt3 = datetime.fromtimestamp(daily[3]['dt']).strftime('%d-%m-%Y')
    dt4 = datetime.fromtimestamp(daily[4]['dt']).strftime('%d-%m-%Y')
    dt5 = datetime.fromtimestamp(daily[5]['dt']).strftime('%d-%m-%Y')
    dt6 = datetime.fromtimestamp(daily[6]['dt']).strftime('%d-%m-%Y')
    dt7 = datetime.fromtimestamp(daily[7]['dt']).strftime('%d-%m-%Y')

    icon_main = data['current']['weather'][0]['icon']
    icon1 = daily[1]['weather'][0]['icon']
    icon2 = daily[2]['weather'][0]['icon']
    icon3 = daily[3]['weather'][0]['icon']
    icon4 = daily[4]['weather'][0]['icon']
    icon5 = daily[5]['weather'][0]['icon']
    icon6 = daily[6]['weather'][0]['icon']
    icon7 = daily[7]['weather'][0]['icon']

    temp1 = daily[1]['temp']['day']
    temp2 = daily[2]['temp']['day']
    temp3 = daily[3]['temp']['day']
    temp4 = daily[4]['temp']['day']
    temp5 = daily[5]['temp']['day']
    temp6 = daily[6]['temp']['day']
    temp7 = daily[7]['temp']['day']
    return temp_main, main_desc, icon_main+'.png', feels_like, pressure, humidity, wind_speed


def update_database(weather_information):
    mydb = mysql.connector.connect(host="localhost", user="root", passwd="adarsh", database="example")
    mycursor = mydb.cursor()
    sql = "REPLACE INTO weather_information (city, temperature_main, descp, icon, feels_like, pressure, humidity, wind_speed) VALUES (%s, %s, %s, %s, %s, %s, %s, %s)"
    mycursor.execute(sql, weather_information)
    mydb.commit()

def fetch_to_database():
    mydb = mysql.connector.connect(host="localhost", user="root", passwd="adarsh", database="example")
    mycursor = mydb.cursor(buffered=True)
    sql =  """SELECT * FROM weather_information WHERE city = %s"""
    mycursor.execute(sql, (city_input,))
    record = mycursor.fetchall()
    # print(record)
    for row in record:
        city, temp_main, descp, icon, feels_like, pressure, humidity, wind_speed = row[0], row[1], row[2], row[3], row[4], row[5], row[6], row[7]
    mydb.commit()
    return city, temp_main, descp, icon, feels_like, pressure, humidity, wind_speed

When I run above code I get this traceback:

I am unable to do so no matter what I try. First I thought it is a problem of circular dependency and I used all the recommended solutions to eliminate it but to no avail.

Erros i came across:

1. AttributeError: 'module' object has no attribute
2. Import Name Error

Note: weatherui.py is class based and practice.py is function based (no classes in practice.py)

Any help would be appreciated.

Answer 1

Taking a step back, it's still not clear why weatherui needs to import practice

Without knowing what many of your functions actually do, would something like this not work?

weatherui.py

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1920, 1080)
        MainWindow.setMinimumSize(QtCore.QSize(1920, 1080))
        ...

practice.py

from datetime import datetime
import requests
import mysql.connector
from weatherui import Ui_MainWindow

def get_weather_data():
    #whatever this does
    pass

def generate_url(url, lat,lon):
    #whatever this does
    pass

def info(url, lat, lon):
    #assuming there's some reason we have to pass these args through, given some code we haven't seen
    url= generate_url(new_url, lat, lon)
    data= get_weather_data(url)
    return get_weather_data(practice.generate_url(practice.new_url, practice.lat, practice.lon))

def inp():
    return Ui_MainWindow.clickMethod().capitalize()


url = 'https://api.openweathermap.org/data/2.5/weather?q='
new_url = 'https://api.openweathermap.org/data/2.5/onecall?'
lat=None
lon=None

city = inp()
city_info = info(new_url, let, lon)