Executing .py files

[Dullstar]

Help. I'm trying to learn to program in Python, but I am having trouble getting .py files to execute once I finish them.

btw, C or any similar languages are NOT acceptable solutions. I have tried them before, but couldn't get so far as completing the Hello World tutorial due to their confusing syntax.

[Dullstar]

I forgot to mention, I am running Ubuntu 9.04 for this.

[OutOfReach]

You can try this from the command line:


python my_file.py



Or, you can add the shebang line:


#!/usr/bin/env python

at the very top of your code, and make the file executable:


chmod +x my_file.py

so you can just do:


./my_file.py

[Dullstar]

Hold on, please. I'm going to apply the changes that I think you say I need to do to the file, if that doesn't work I'll post the source code and see if someone can fix it.

[Dullstar]

This is the source code.

#!/usr/bin/env python
chmod +x calc.py

# Python Calculator

true=1
print "Welcome to the Calculator"
print "-------------------"
print
pi = 3.141592653
print "We support the use of pi."
print
print "In a future version we hope to make the program loop to the beginning of code after completion."
print "The string for pi is simply... pi."
#pick operation



repeating=true
running=true

while(repeating):
while(running):
print "Please select operation."
print
print "Fractions don't work."
print
print "Equation (sorry, no variables) - 1"
print "Area - 2"
print "Powers - 3"

# usrimput

oper = input(">>> ")

if oper == 1:

print "Please enter the equation (remember, no variables)"
prob = input (">>> ")
answer = prob
print answer
print
print
print

if oper == 2:
print "Please select a shape."
print "Recangle - 1"
print "Circle - 2"
print "Triangle - 3"
print
print "Squares, rhombuses, and paralellograms can be done through the rectangle."
shape = input (">>> ")

if shape == 1:
print "You have chosen a rectangle."
print "The formula is length*width."
print "What is the length?"
length = input (">>> ")
print "What is the width?"
width = input (">>> ")
area = length*width
print area
print
print
print

if shape == 2:
print "You have chosen a circle."
print "Formula is Radius*Radius*Pi"
print "This calculator uses 3.141592653 for pi."
print "Do you have the radius (1) or the diameter (2)?"
circle = input ("Radius (1) or Diameter (2)>>> ")

if circle == 2:
print "What is the diameter of the circle?"
print "Formula is diameter/2.0"
diameter = input (">>> ")
radius = diameter/2.0
print "Radius is", radius
area = radius*radius*pi
print area
print
print
print

if circle == 1:
print "What is the radius?"
radius = input (">>> ")
area = radius*radius*pi
print area
print
print
print

if circle > 2:
print "INVALID INPUT"
print
print
print

if circle < 1:
print "INVADLID INPUT"
print
print
print

if shape == 3:
print "You have chosen a triangle."
print "Formula is base*height*0.5"
print "What is the base?"
base = input (">>> ")
print "What is the height?"
height = input (">>> ")
area = base*height*0.5
print area
print
print
print

if shape > 3:
print "INVALID INPUT"
print
print
print

if shape < 1:
print "INVALID INPUT"
print
print
print

if oper == 3:
print "What number to what power?"
print "Please enter number."
number = input (">>> ")
print "Please enter power."
power = input (">>> ")
answer = number**power
print answer
print
print
print

if oper > 3:
print "INVALID INPUT"
print
print
print

if oper < 1:
print "INVALID INPUT"
print
print
print



repeating=true
running=true


Now that I look at it, there is some text I never got around to updating. Just printed stuff though, shouldn't have any input on the code.

Can you help me figure out what the problem is? It won't execute at all.

[OutOfReach]

Ok the #!/usr/bin/env python is in the right place, but I meant inserting the command


chmod +x my_file.py

into the command line, not into the file, sorry about the confusion.
EDIT: Make sure to do the above command in the correct directory, for example if the file is on your desktop, you would do:


cd ~/Desktop/

then the first command.

[Dullstar]

Thanks.

Is there a way I can make it executable just like any other program though?
After all, I'm going to be making a game with this language.

[Dullstar]

It's working in the terminal now. Is there a way I can get it to run by navigating to the file itself and double clicking on it?

[OutOfReach]

It's working in the terminal now. Is there a way I can get it to run by navigating to the file itself and double clicking on it?
Hmm...I'm not quite sure but since you have made it executable (with the chmod command), try double clicking on it, it should come up with a prompt with some options, and one of those options __should__ be something like "Run in Terminal", try clicking on that.

[Dullstar]

I'll see if that works.

[Dullstar]

It's working! Thanks, OutOfReach. I'm going to make a few polishes to the code, then upload it to my website. I'll be sure to credit you for helping me solve the problems that popped up!

[OutOfReach]

It's working! Thanks, OutOfReach. I'm going to make a few polishes to the code, then upload it to my website. I'll be sure to credit you for helping me solve the problems that popped up!
Glad to help :)