its easy to get confused when you have a big chunk of code like this … instead try and split your problem into smaller parts start with a function to get the details of only one student def get_student_detail(num_tests): # get the detail for just 1 student! student_name = input(“Enter Student Name:”) scores = [] … Read more
Instead of def_init_(self,name,age) You should use def __init__(self,name,age): def means you start a function (definition), and it needs a space to follow. The function __init__ is the constructor. There should always be a colon at the end of a function definition (followed by the body of the function). 0 solved Python, def_init_(self): syntax error
You want to look at a while loop eg: # Set the target value target = 50 # Initialize the running total to 0 total = 0 run the indented code while target != total while total != target: # ask the user for a number choice = input(“Number? “) # add choice to total … Read more
The easiest solution would be to iterate through the intersection of the keys and add the corresponding balance and price as an entry in a new dictionary. The intersection isn’t necessary if you can guarantee that if a key exists in either of balance of price, it will exist in the other. As I cannot … Read more
The “basic” regex matching just the year field is \d{4} but it is not enough. We must prohibit that before the year occurs: 3 letters (month) and a space, then 2 digits (day) and a space. This can be achieved with negative lookbehind: (?<!\w{3} \d{2} ) But note that: after the day field there can … Read more
First iteration, j is 0, i is 1. j is set to 0+1 == 1. Second interation, j is 1, i is 3. j is set to 1+3 == 4. Third iteration, j is 4, i is 5. j is set to 4+5 == 9. Fourth iteration, j is 9, i is 7. j is … Read more
Matplotlib provides an object oriented API. This means that all the elements of the figure are acutally objects for which one can get and set properties and which can be easily manipulated. This makes matplotlib really flexible such that it can produce almost any plot you’d imagine. Since a plot may consist of a hundred … Read more
Multiprocessing is a way to get it done faster (in addition of using Numpy): E.g: In [11]: from multiprocessing import Pool In [12]: pool = Pool(10) In [13]: pool.map(int, [str(i) for i in range(500)]) Numpy will mostly provide a memory gain as you would be dealing with primitive types instead of python objects, but will … Read more
def reverseStr(s): return ‘ ‘.join([x[::-1] for x in s.split(‘ ‘)]) 6 solved How do I reverse words in a string with Python
In CPython, ids relate to where in memory the string is stored. It does not indicate anything about mutability. How memory is used exactly is an internal implementation detail. You could of course do a deep dive into the internals of CPython’s memory management to disentangle that in-depth, but that’s not really useful. (Im)mutability can … Read more
Do you mean something like the following? for i in range(1,10) + [chr(x) for x in range(ord(‘a’), ord(‘z’)+1)]: print i It prints 1 through 9 followed by a through z. 4 solved How to create a loop from 1-9 and from a-z?
I just looked at your code, you are using spaces and lines 23, 33, 172 should all be spaces instead of tabs. Lines 69-118 should all be indented with spaces. Ok, so your comments on the return statements were messing things up, this code compile fine. Also you didn’t initialize middleName to anything so I … Read more
raw_input() takes in a line of input as a string. The .split() string method produces a list of the whitespace-separated words in a string. int() parses a string as an int. So putting that together, you can read the input you want using t = int(raw_input()) cases = [] for i in range(t): cases.append( map(int, … Read more
There’s two issues. First, to get the day of the month, you should use %d, not %A with strftime(). date = time.strftime(“%d”); Second, this returns the day as a string, not as an integer, but datetime.date() requires its arguments to be integers, so you need to convert it with int(date) date = int(time.strftime(“%d”)) But there’s … Read more
@Martijn’s solution is enough since you only need to store and shuffle 9000 numbers. If you want numbers from a bigger range and you know (approximately) how many numbers you’ll need, there’s a better way: The function random.sample will give you numbers in the desired range without repetition. For example, to get 500 distinct six-digit … Read more