pycalc | A python calculator project to be used by CS 190 students | Apps library
kandi X-RAY | pycalc Summary
kandi X-RAY | pycalc Summary
A python calculator project to be cloned by CS 193 students.
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Top functions reviewed by kandi - BETA
- Add two values .
- Subtract a .
- Multiply a .
- Divide a by b .
pycalc Key Features
pycalc Examples and Code Snippets
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QUESTION
print("Welcome to The pyCalc")
print("For Addition press 1")
print("For Multiplication press 2")
print("For Subtraction press 3")
print("For Division press 4")
flag = 'y'
while flag == 'y':
x = float(input("Enter your Choice(1-4): "))
if x == 1:
a = float(input("Enter 1st Value: "))
b = float(input("enter 2nd Value: "))
c = a+b
print("Sum: ", int(c))
elif x == 2:
a = float(input("Enter 1st Value: "))
b = float(input("Enter 2nd Value: "))
c = a*b
print("Product: ", int(c))
elif x == 3:
a = float(input("Enter the 1st value: "))
b = float(input("Enter the 2nd value: "))
c = a - b
print("Difference: ", int(c))
elif x == 4:
a = float(input("Enter the 1st value: "))
b = float(input("Enter the 2nd value: "))
c = a // b
print("Quotient: ", c)
else:
print("error !")
flag = print(input("Do you want to calculate more(y/n)? : ", y))
if flag == y:
continue
ANSWER
Answered 2021-Mar-13 at 18:44I have re-written your code because there were two issues:
- There's no such thing as
print(input("")) flag = input("Do you want to calculate more(y/n)? : ")should be outside else
QUESTION
Hopefully I am following the guidelines correctly here with my first question. I am trying to create a GUI with the MVC structure. I am having difficulty with understanding why my signals are not always being picked up by the controller. I know that there is just something simple that I'm missing. I'm attaching code from a simple calculator which I used as a guide. I removed most of the features to simplify this as much as possible. It is now only 3 of the original buttons and my own button. For debugging, I just have the value on the button printed out when you press it.
...ANSWER
Answered 2020-Nov-19 at 17:31The problem is caused because the PyCalcCtrl object is not assigned to a variable so it will be destroyed and therefore the "_printthis" method will not be accessible. On the other hand, when functools.partial is used then the object of the PyCalcCtrl class is assigned to the scope of that function, that's why it works.
The solution is to assign the PyCalcCtrl object to a variable:
QUESTION
I am trying to build a simple GUI using PyQT5, with 3 buttons to open file browsers and one more to run processing with the selected files, but I can't get my buttons to connect to the functions needed to carry this out.
In the Ctrl class, the _connect_signals function doesn't seem to be calling _input_select. Can anyone help me figure out why?
ANSWER
Answered 2020-Sep-30 at 18:09The problem is that you are not keeping any persistent reference to the Ctrl() instance you are creating. This results in python garbage collecting it as soon as the instance is created.
To solve the issue, just assign it to a variable:
QUESTION
I've just started learning python's tkinter module today. I'm making a basic calculator for practice. Currently I'm just making the actual GUI for it and the '0' button has margin on each side of it and I'm unsure why. Like I said, I just started learning it today. Can someone tell me why this is happening and also how to make it not?
Here is what it looks like:
Looking at the 0, there is margin on the left and right of the button.
Here is the code:
...ANSWER
Answered 2020-Aug-12 at 22:42When adding a widget (in this case a button) to the grid, you can add the stickyparameter to make the button expand to fill the grid in any given direction. In this case, if you changed to:
QUESTION
From a C-program I'm trying to fork off a child process to run a python script, which should process lines from parent on it's stdin and return results back to parent on stdout, ie. parent will feed input lines and read results from child stdout.
Only both parent and child are just stuck on reading there first line of data from one another.
Wondering why, any hints appreciated, TIA!
Here's a sample run, starting C-parent:
...ANSWER
Answered 2018-Sep-24 at 14:11I've done enough experimentation with some command line tools of my own devising to convince me that the problem is the way Python works in this piped context. It doesn't process the data until it gets EOF (because the data fed isn't big enough to fill buffers). So, despite the best efforts of raw_input and attempts to set line buffering before Python is executed, it isn't reading data as soon as lines are available. My test pipeline has 6 processes in a row:
QUESTION
I am using Tkinter to make a graphical calculator in Python. My aim is to make my calculator look similar to this - http://prntscr.com/k6exeu
I am currently still building my calculator so there's a lot of stuff missing, but I decided to do the design first. When I execute my code, I get this - http://prntscr.com/k6eyhm
I need help fixing this. I'll paste the code so far so you can spot any errors.
...ANSWER
Answered 2018-Jul-17 at 13:17To get the layout you want, your entry user_output has to span all buttons columns. This can be achieved with the columnspan grid option:
QUESTION
I recently started working on a fast python library full of calculus operations, it would help me learn the maths behind AI much better. I think the problem with tensorflow is that everything just happens, I would learn a lot from making it happen :)
The main class in this library is the Variable class, which has 3 ways to init it- as a constant, independent variable or a function. I want to wrap this class in cython. So far, the class just has a constructor and a getValue function which would return a function that gives the class value.
The problem is that when you initialize it as a function, the constructor needs two other instances of the Variable class and the operation between them (the idea is that later, I would combine these function variables to make any function). I want to wrap this in cython: variable.pyx:
...ANSWER
Answered 2017-Oct-12 at 18:02I think the standard way of doing it would be:
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Install pycalc
You can use pycalc like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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