it will be better if you separate the answers from the questions and number properly

Suppose the following input is supplied to the program:
without,hello,bag,world

Then, the output should be:
bag,hello,without,world

The output for the solution is "bag, hello, world, without". Somehow the sorted() function returns "world" < "without". It seems like the sorted() function not try to compare letter by letter.

As in topic: Problem is to provide class, answer is a generator function
You should change "Define a class with a generator which can iterate the numbers" to "Define a generator function which can iterate the numbers"
Or change soultion to provide class with iter() and next() for 2.7 or iter() and next() for 3.0+

Solution code does not seem to work.
After running the solution provided I get
TypeError:argument to reversed() must be a sequence
I have edited reverse() as reversed().
Haven't found a good solution how to make reversed() sequential. Please help.
Thank you!

I have two non-linear equations with only two variables which are tedious to solve. Please see below for the equations and conditions:

I'm having difficulty solving this system, is there any way to input this into a solver? I tried solving it manually but it becomes too complex.

Any help would be appreciated, I'm posting it here as a last desperate try to get some hint on how to go about it. Thank you so much.

def equations(p):
    x, y = p
    return ((3*(x**2+y**2))**-1*(x*(x**2+y**2+2.25)*np.sinh((4*m.pi*y*m.e4)/466)+3*x*m.cosh((4*m.pi*y*m.e4)/466)+y*(x**2+y**2-2.25)*m.sin((4*m.pi*x*m.e4)/466)+3*y*m.cos((4*m.pi*x*m.e4)/466))-31.176, 6*(x**2+y**2)**-1*((1+x**2+y**2)*((x**2+y**2+2.25)*m.cosh((4*m.pi*y*m.e4)/466)+3*x*m.sinh((4*m.pi*y*m.e4)/466))+(1-x**2-y**2)*((x**2+y**2-2.25)*m.cos((4*m.pi*x*m.e4)/466)-3*y*m.sin((4*m.pi*x*m.e4)/466))                         )-42.35)                                                        )

x, y =  fsolve(equations, (1, 1))

print equations((x, y))

Question:
Write a program which can map() to make a list whose elements are square of numbers between 1 and 20 (both included).

the correct solution should be
li = [1,2,3,4,5,6,7,8,9,10] evsqr = **list**(map(lambda x: x**2, filter(lambda x: x%2 == 0, li))) print(evsqr)

given solution
squaredNumbers = map(lambda x: x**2, range(1,21)) print squaredNumbers

On question 17 there is a import for the sys module, but, it seems to not be used on the code. Is that a mistake or does it makes some sense?

As far as I know, anything imported should be used.

Hello
I request for assistance
I am new in python and I have a project with django.
How can someone create a tab which after payment of the desired thing it gets open
Example I cant view this house unless I make a payment.
When I make a payment the tab allows me to view the house
Kindly help

• this project is featured on the github explore page
  however, it does not have a verbose README
  some issues and PR are taking too long to get attention

class recta():

def __init__(self,base,heig):
    self.base=base
    self.heig=heig  

def area(self):
    self.ar=self.base*self.heig
    
def __str__(self):
    return "the area of this rectangle is : "+(self.ar)

my_rect = recta(2,2)
print(my_rect)

This is the error message that I received:

AttributeError: 'recta' object has no attribute 'ar'

I will appreciate any help on this matter

the answer doesn't seem to be working properly.
"reverse() is not defined"

class Capital:
def init(self):
self.s=''
def line(self,a):
self.s=a
def printstr(self):
print(self.s.upper())

obj=Capital()
obj.line('''Hello World!
Let's party!''')
obj.printstr()

I have tried doing it using class keyword in python 3.7. Hope it's acceptable!

After question no 3.5 ( line no: 1197), it directly jumps onto question/Chapter no: 7.2. It would be useful, if you could add the pending questionnaire in the list. Thanks.

Hello friend
I request for assistance
I am new in python and I have a project with django.
How can someone create a tab which after payment of the desired thing it gets open
Example I cant view this house unless I make a payment.
When I make a payment the tab allows me to view the house
Kindly help

In the first sentence of the question:
"Write a program which can compute the factorial of a given numbers."
'numbers' should be singular.

can u please check solution of ques)20 , i found it erroneous.

It is typically best practice to add information into the README so that users can know how to run the program and what it does. It doesn't have to be much but some steps on how to run python code would go a long way in improving the user experience.

For this application first we have to identify the data that needs to be saved and accessed, with that we will churn out entities that will take form of classes and use inheritance in case of relationship. After that based on the use cases we can design functions and events flow.

so here if we see the requirement defined for application :

1. There are customers who make reservation

2. There are tables for which reservation are made.

3. Waiters who will take orders.

4. Food Item that will be added to bill

5. Bill which has to be payed.

6. Order which contain list of food items ordered with quantity

So five entities i.e. classes needs to be created.

Now, since customer and waiter are person so we can create an abstract class with some common attribute like name, ssn, phone number, address e.t.c. and then we can inherit it to make customer and waiter class with their specific attribute like waiter id for waiter and no. of accompaniment for customer.

Similarly food item can be an interface which can be inherited in veg and non veg abstract classes which can further inherited in different food items available in restaurant.

Now, for holding reservation details we need to create a reservation table in db which contains details like :

1.reservation id

2.table num

3.customer id

4.waiter id

5.date and time

6.order

7.bill

Now, below are the possible use cases that I can sort out :

1. Make Reservation - For this use case from ui user will fill the details like time and no. of people for dinner reservation, based on that we will search in db for the availability of table with that capacity on that time. For this db query we can use table and reservation. If available, then we will send success response with table id to ui and then user can continue after filling his details like name, ssn e.t.c. and make reservation with confirmation button. With this we can generate a reservation num and save the details in that table with a waiter alloted to that.

2. Waiter login - this is simple login flow so nothing new here.

3. Waiter access to add order - Here at his home page waiter can select table (in case assigned to multiple table) for which he has to add order. Here on the ui we has to provide a search functionality

a) to search food items - so an event is made on click of search button which will call find query in food item db and return result. This result can be used by waiter and then click on add button after selecting quantity, we have

b) create an event to generate order or update order with those food item.

4. Bill generation - When dinner is done then waiter can click on checkout button and then need to create an event which will create bill based on the order of that table and save it in database with waiter tip details :)

I have not created any class and function as based on programming language it changes but design will remain the same.

Now for error handling-

There can be multiple error as table not available, food item out of stock, total calculation at the time of bill generation and many other with technical errors like db query, logical errors.

Also , ui related errors like phone number not correct, ssn not provided e.t.c.

问题8需要更正

Question 16
Level 2

Legend |

*please fix |

Then, the output should be:
*1,9,25,49,81

Hints:
In case of input data being supplied to the question, it should be assumed to be a console input.

Solution:
values = raw_input()
*numbers = [int(x)**2 for x in values.split(",") if int(x)%2!=0]
print ",".join(numbers)
#----------------------------------------#

for i in range(1,n+1):
NameError: name 'n' is not defined

I am new to python and started working slowly with the example exercises.
I am getting following error on solution code below.
Solution code:

n = int(raw_input())
d = dict()
for i in range(1, n+1):
d[i] = i*i

print d

Here is the error:
TypeError: dict() takes exactly 1 argument (0 given)

It says we have to provide an argument inside the dict() (function).
please help to solve this.

plot a graph of live stock market using python 3 idle.

For questions that require "a comma-separated sequence on a single line", many of the answers use a list to store solutions but then join the elements into a string. This is unnecessary, since a list is a comma-separated sequence that comes out on a single line (if your screen is big enough).

This is more just a wording issue.

there should be putNumbers() instead of reverse

The current solution looks less pythonic.
If i may suggest this one:
b = input("Enter words : ")
a = b.split(" ")
print([x.upper() for x in a])

File "question.py", line 5
print ','.join(l)
^
SyntaxError: invalid syntax

Mine solution is:

for i in range(2000, 3201):
    if i%7 == 0 and i%5 != 0:
        print(i, end = ', ')

Is there any particular reason why given solution with .append and .join is used, is it better then mine from some reason? Because the one I wrote takes less lines. I'm a complete beginner, apologize if my question is ridiculous.

The solution shown is
print(random.sample(range(100), 5))

However that will only generate numbers between 0 and 100, but the question asks for 100 to 200.

The solution should be
print(random.sample(range(100, 200), 5))

X, Y = [int(num) for num in input("Enter numbers > ").split(',')]
arr = [[i*j for j in range(0, Y)] for i in range(0, X)]
print(arr)

Just been working through these questions (very useful btw) and came up with this as an alternative to the solution provided - which is better?

It gives NameError: name 'raw_input' is not defined even when I add variable with raw_input.

This is my solution:

def numb_f(x):
    i = 1
    suma = 1
    while i < int(numb):
        suma =  suma * (i+1)
        i = i + 1
    return suma
numb = int(input("Please add a number: "))
if type(numb) == int:       
    print(numb_f(numb))
else:
    print("Please add number!")

Hello community,
I'm a mechanical engineer, and quite new to github. I'm doing research in Thinfilms. For my project, I have to take my experimental values which are in excel sheet format and use a python code to substitute these values in analytical equations, solve them and output the answer in a new excel column. This code should run on a continuous loop and automatically calculate solution for each input value (present in the column)

I'm a beginner in python and tried searching the web for answers, can someone please give me a hint as to how I can go about this?
Thanks

Hello,

The problem on line 1975 throws a syntax error. I am using python 3.6 and was wondering if the error is due to that or something else.

Thank You,

Separating the answer in another file (answers.txt) could motivate people who want to practice without instantly checking the answer.

Question 16 asks to "square each odd number in a list" when the given input and output don't match that statement, rather it only outputs the odd number not squared.

Small issue, but one nonetheless.

Is the solution for question 5 correct?

I found it couldn't produce the expected output, did I miss anything?

hi

i have a file.txt with this content
file.txt
{
1
2
3
4
5
}

and i have file2.txt that there only a line of file.txt

file2.txt
{
3
}

now i want to replace content file2.txt with next line file.txt after compare

for exam:
first run
file2.txt > 4

second run
file2.txt > 5

third run
file2.txt > 1

but in third run file2.txt don't change...

this is my code

for line in file.readlines():
	if line == find_between(file2,'number" : "','",')+"\n":
		i = 1
		continue
	if i == 1:
		aaaaaa=string.replace(file2,find_between(file2,'number" : "','",'),line.rstrip('\n'))
		deleteContent(file2)
		file2.write(aaaaaa)
		print aaaaaa
		break

import math
c,h=50,30
q=[str(int(round(math.sqrt((2cint(d))/h)))) for d in input().split(',')]
print(','.join(q))

This is a shorter and accurate solution. What do you think?

Hello,
I request for assistance
I am new in python and I have a project with django.
How can someone create a tab which after payment of the desired thing it gets open
Example I cant view this house unless I make a payment.
When I make a payment the tab allows me to view the house
Kindly help

the if in the loop maybe wrong?
tp=(1,2,3,4,5,6,7,8,9,10)
li=list()
for i in tp:
if i%2==0: #<-----tp[i] should be i
li.append(i)

tp2=tuple(li)
print (tp2)

The file does not contain any information and can be made more clear if have one.