Instead of overwriting the same variable, cb, try using an iterable type such as dictionary. You should also need to be attaching the value of Checkbutton to a tkinter variable class, such as BooleanVar, in order to easily track its status & value. The code below produces a GUI that re-writes Text each time a … Read more
Use ast and then ast.literal_eval() import ast print(ast.literal_eval(x)) solved Turn a string of a list to an integer in Python [closed]
I was wondering how you got the array of lists. That usually takes some trickery. In [2]: >>> a = np.array([“0,1”, “2,3”, “4,5”]) …: >>> b = np.core.defchararray.split(a, sep=’,’) …: In [4]: b Out[4]: array([list([‘0’, ‘1’]), list([‘2’, ‘3’]), list([‘4’, ‘5’])], dtype=object) Simply calling array again doesn’t change things: In [5]: np.array(b) Out[5]: array([list([‘0’, ‘1’]), list([‘2’, … Read more
Edited as per requirements. Let know if it works:- def add_from_one_again(st): return sum([int(i*(i+1)/2) for i in st]) print(add_from_one_again([16,12,89])) 4 solved Defining While Loop Functions With a List Containing Digits
They are not the same. The first will implicitly return None: def f(): return print f() #None while the second will return True: def f(): return True print f() #True Note: True and False are booleans in Python. solved Difference between return and return True in python [closed]
Assuming there is something after the else statement, the else statement should be aligned with the if statement, not inside it. Example – if sisiter_age > brother_age: print “sisiter is older” else: Also, if you do not have (or need) anything inside the else statement, you should just remove it. 0 solved Python indentation error … Read more
Use a list and a while loop. data=[] for x in xrange(100): data.append(raw_input(“Your data: “)) If you don’t need to store the data that was entered, get rid of the list and process this data right in the loop. 1 solved Python wondering about user input
But this is completely basic Python. You’re getting a list, and you want to output it one URL per line. for url in urls: print url 1 solved Clean URL with BeautifulSoup
Updating answer based on updated question: classdata = {} for data in schooldata: if classdata.get(data[‘class_code’]): classdata[data[‘class_code’]].append(data) else: classdata[data[‘class_code’]] = [data] print classdata To print class data (in orderly manner): for class_data in sorted(classdata): for person_data in sorted(classdata[class_data], key=lambda x: x[‘name’]): print person_data[‘class_code’], person_data[‘name’], person_data[‘score’] 15 solved how would i print all the names and scores … Read more
def veggie_r_ip(foods, curIndex): if(curIndex >= len(foods)): return curFood = foods[curIndex] is_veggie = curFood.split(‘|’)[2] if is_veggie == “False”: foods.remove(curFood) veggie_r_ip(foods, curIndex) else: veggie_r_ip(foods, curIndex + 1) def main(): foods =[‘Spicy Vegetable Moo Shu|1|True|140’, ‘BBQ Pork|1|False|920’, ‘Chicken Breast|1|False|920’, ‘Salad|1|True|920’] veggie_r_ip(foods, 0) print foods 1 solved Removes non-vegetarian foods from a list of foods. [closed]
Before you can fully understand what the error means and how to solve, it is important to understand what a built-in name is in Python. What is a built-in name? In Python, a built-in name is a name that the Python interpreter already has assigned a predefined value. The value can be either a function … Read more
You can accomplish this using nearly any text editor you want by using the Find and Replace feature. The normal keyboard shortcut (including python’s IDLE) for this is Ctrl+H, though different editors have different shortcuts. solved Change a variable name in all places in Python [closed]
def greater_less_equal_5(answer): if answer>5 : return 1 elif answer<5: return -1 else: return 0 print greater_less_equal_5(4) print greater_less_equal_5(5) print greater_less_equal_5(6) Try this solved Understanding how to use conditional statements with python [closed]
Hope this code may help you def add(a,b): print(a+b) def subract(a,b): print(a-b) def multipy(a,b): print(a*b) def divide(a,b): print(a/b) ch=”y” while ch==”y” or ch==”Y”: x = float(input(“first number : “)) y = float(input(“second number: “)) print(“…..MENU…….\n 1.Add\n 2.Subtract\n 3.Multiply\n 4.Divide\n”) op=int(input(“Enter your choice : “)) if op==1: add(x,y) elif op==2: subract(x,y) elif op==3: multipy(x,y) elif op==4: … Read more
Assuming s.subjects is None or some other False value when there are no subjects, and likewise for books for s in students: for subject in s.subjects or []: for book in subject.books or []: writer.writerow(s.name, s.class, subject.name, book.name) More generally, you can write for s in students: for subject in s.subjects if <condition> else []: … Read more