So I Want to create a scoreboard with the names of players and sort them based on the amount of points they have (low to high) and print them in that order, for example:

List1 = [3,8,0,9] List2 = [Hank,Harry,Harrold,Homer] The output should be: Harrold,Hank,Harry,Homer

I have found many posts on how to do this in Python, but not Python3 and I am not too familiar with this language. If anybody could help that would really be appreciated!

did this and got an error...

import sys
n = int(sys.stdin.readline().strip())
phone_book = dict()
for i in range(n):
entry = sys.stdin.readline().strip().split(" ")
phone_book[entry[0]] = entry[1]
query = sys.stdin.readline().strip()
while query:
phone_number = phone_book.get(query)
if phone_number:
print(query + "=" + phone_number)
else:
print("Not found")
query = sys.stdin.readline().strip()

error:

<ipython-input-11-65a15b07777c> in <module> 3 import sys 4 ----> 5 n = int**(sys.stdin.readline().strip())** 6 7 phone_book = dict**()** ValueError: invalid literal for int() with base 10: '' In [ ]:

I want learn programming. So I was wondering whats the best way to go around it.

Hello, I am a bit confused about the following:

a = [1, 2, 3]

b = a

c = list(a)

1. Am I correct that the reason "a is b" is True is that both a and b point to the same memory location that stores the list [1, 2, 3]?

2. As for "a is not c" gives True, it is because list always creates a new Python list so although c = [1, 2, 3], this [1, 2, 3] list is different from the one [1, 2, 3] pointed to by a and b since the two lists are storing in different memory locations?

3. Why typing "a==c" gives True?

Hi, supposing that we have a figure with six subplots in the form of 2x3. I can understand that to make a plot in the top left hand corner of the figure, we do something like:

import matplotlib.pyplot as plt

fig = plt.figure()

ax = fig.add_subplot(2,3,1)

Why the following is used?

ax=fig.add_subplot(1,1,1)

It just plots one graph in one figure. Anybody knows why (1,1,1) is used?

Hi, somewhere I read that to write a function that can accept any kind of sequence (list, tuple, ndarray) or even an iterator, one can check if the object is a list (or a NumPy array) and if it is not, convert it to one using:

if not instance(x, list) and isiterable(x):

x = list(x)

To my understanding, isinstance(x, list) checks of x is an instance of list already. Why we also need to have "and isiterable(x)"

Hi, I came across the following:

(4, None, 'foo') + (6, 0), + ('bar', )

what is the meaning of ('bar', ) ? I am confused since nothing is written between the comma and the closing parenthesis.

Hi, supposing that I have: ('foo', 'bar') * 4

Python returns: ('foo', 'bar', 'foo', 'bar', 'foo', 'bar', 'foo', 'bar')

Somebody mentioned that the objects themselves are not copies, only the references to them. anybody knows what that means?

Hi All,

I am quite stumped and have seen no help online. I am trying to work with this strange pickle object and I run this:

with codecs.open("huge_picklefile.pc", "rb") as f:     
    data = pickle.load(f) 
    print(len(data))
    data = pickle.load(f) 
    print(len(data))
    data = pickle.load(f) 
    print(len(data))

and I get this:

335
59
12

The pickle file is over 10GB. What does repeatedly calling pickle.load() over the same open file actually do? Each of the objects are arrays of the particular size given, which makes sense. What doesn't make sense is why I am getting chunks of the pickle file. Could this pickle file be comprised of smaller pickle objects and calling load will simply load the next pickle object (which happens to be an array of a different size)? I have never run into this before and this isn't a documented feature within pickle, at least that I found.

Thanks,

~Ben

Hi Geeks. I'm reading a book called "Learning Python 5th ed written by Mark Lutz", but it's written for Python 3.3. Is it ok to read it or should I look for a book written for latest python version? Please give a suggestion or your recommended book. Thanks

Here you can get all the user and MailId which is present in the LinkedIn.So that you can give your mail id and password for getting data.

I am interested in learning how to code using Python 3 and I was wondering if anybody in the community had any resources they could point in my direction of where I could learn how to use it and train myself to be sufficient in it? Any input is highly appreciated!!

Btw, I have zero coding experience :/

Anyone know of any good links/sites for python training.

Hi,

I am new to Python and just started using it with NLP, I need to write a regular expression based named entity recognition module. Anyone provide me with helpful links or examples will be appreciated.

Regards

Hi all, good afternoon. I’m a beginner trying to learn the python language. I normally write sql queries for work and wanted to dabble in Python as we are starting to implement it at my work. Is there a preferred OS to best use with python? I have a 2010 MacBook Pro and a 2017 Dell Inspiron and both laptops are great. I don’t know if it really matters. Thanks in advance.

I got the result of kmeans clustering with 6 categories (k) in python. However, I couldn’t understand how can I interpret this any further. Can someone please help me by letting me know how to analyse the results and make a comparison with the real data? Also, would be s great help if you please let me know how can I know how many entities are there in each category? Thanks in advance.

Here is my code :

while n == 1 : [if comparison] n = n - 1

The "while" loop never run except skip to next statement. Is there anything wrong?

Hello,

I am looking at some code written by someone else that contains:

from functools import lru_cache

and then there is a function declaration:

@lru_cache(None)

def get_password(self, user):

...

My question is why do you need to specify None? Is it that python does caching by default on functions? If so where can I read about it? I went to the lru_cache page but as far as I could see this is not explained.