attributeerror

问题 The error says: AttributeError: 'list' object has no attribute 'cost' I am trying to get a simple profit calculation to work using the following class to handle a dictionary of bicycles: class Bike(object): def __init__(self, name, weight, cost): self.name = name self.weight = weight self.cost = cost bikes = { # Bike designed for children" "Trike": ["Trike", 20, 100], # Bike designed for everyone" "Kruzer": ["Kruzer", 50, 165] } When I try to calculate profit with my for statement, I get the

问题 The error says: AttributeError: 'list' object has no attribute 'cost' I am trying to get a simple profit calculation to work using the following class to handle a dictionary of bicycles: class Bike(object): def __init__(self, name, weight, cost): self.name = name self.weight = weight self.cost = cost bikes = { # Bike designed for children" "Trike": ["Trike", 20, 100], # Bike designed for everyone" "Kruzer": ["Kruzer", 50, 165] } When I try to calculate profit with my for statement, I get the

问题 I am new to python and just downloaded it today. I am using it to work on a web spider, so to test it out and make sure everything was working, I downloaded a sample code. Unfortunately, it does not work and gives me the error: "AttributeError: 'MyShell' object has no attribute 'loaded' " I am not sure if the code its self has an error or I failed to do something correctly when installing python. Is there anything you have to do when installing python like adding environmental variables, etc.

问题 I'm writing an inventory database program. I'm a novice so I'm sure I have something wrong. def select_item(): #Create a Database or Connect to one conn = sqlite3.connect('inventory.db') #Create Cursor c = conn.cursor() a = id_select.get() c.execute("SELECT * FROM inventory WHERE oid = " + a) records = c.fetchall() for record in records: Item_editor.insert(0, record[0]) Quantity_editor.insert(0, record[1]) Asset_tag_editor.insert(0, record[2]) Notes_editor.insert(0, record[3]) #Entry Fields

问题 I have 2 modules: a: import another_module def func(): b: import a x=a.func() This is showing error: module 'a' has no attribute 'func'. What i am doing wrong in importing a.ipynb 回答1: Make sure your module is names 'a.py', and it is in the same folder as b, otherwise, in the place where all the other modules are stored. 来源： https://stackoverflow.com/questions/61870325/module-a-has-no-attribute-func

问题 I recently reinstalled anaconda to shift the directory over from an admin account to my personal account. Previously, I had no issue with the code below import matplotlib.backends.backend_tkagg as tkagg defaultcursor = tkagg.cursord[1] Now, it gives the following error: AttributeError: module 'matplotlib.backends.backend_tkagg' has no attribute 'cursord' any idea why this is happening? 来源： https://stackoverflow.com/questions/54002098/attributeerror-tkagg-has-no-attribute-cursord

问题 I recently reinstalled anaconda to shift the directory over from an admin account to my personal account. Previously, I had no issue with the code below import matplotlib.backends.backend_tkagg as tkagg defaultcursor = tkagg.cursord[1] Now, it gives the following error: AttributeError: module 'matplotlib.backends.backend_tkagg' has no attribute 'cursord' any idea why this is happening? 来源： https://stackoverflow.com/questions/54002098/attributeerror-tkagg-has-no-attribute-cursord

问题 I'm trying to make a turtle game on Repl.it and I don't know why this error keeps coming up. Here is my code: import turtle wn = turtle.Screen() wn.bgcolor("white") wn.setup(width=800, height=800) wn.tracer(0) # Set up the ground ground = turtle.Turtle() ground.color("white") ground.shape("square") ground.speed(0) ground.shapesize(stretch_wid=200, stretch_len=20) ground.speed(0) ground.color("black") ground.penup() ground.goto(0, -400) ground.direction = "stop" 回答1: It seems that the

问题 I am not reassigning the open keyword yet still receive this error. Any suggestions or direction to fix my error? with tempfile.mkdtemp() as test_dir: print(test_dir) AttributeError: __enter__ I am also new to python and I am having a hard time understanding these concepts. 回答1: You're using mkdtemp incorrectly. mkdtemp returns the path name as str, not a context manager. If you want a context manager for managing a temporary directory, you need to use TemporaryDirectory, which is available

问题 I just set up the VS Code with all the Python extensions. Python version is 3.8.3 through Anaconda. The interpreter is venv. When I run this code import matplotlib.pyplot as plt An error shows - Exception has occurred: AttributeError module 'sip' has no attribute 'setapi' File "C:\test.py", line 145, in <module> import matplotlib.pyplot as plt I've tried uninstalling and reinstalling matplotlib, but to no avail. 回答1: This worked for me. python -m pip install matplotlib==3.2 回答2: There seems