Mixing
Turtle Graphics window not responding
I am attempting to translate a Julia set generator that I made previously to Python code. However, when the code is run, the turtle graphics window stops responding immediately and draws nothing. Have I done something horribly wrong or is there something I'm missing? Perhaps I'm asking too much of python to do in 1 frame. Please explain what is causing this to happen and how I can fix it. Thanks!
import turtle
import time
y_set =
map_output = 0
iterations = 0
#turtle.hideturtle()
#turtle.speed(1)
generate a list of y-values
def y_set (r):
global y_set
y_set =
for n in range ((360*2)+1):
y_set.append(n)
create a color value
def color (i, n):
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
iterate on the x's
def repeat (n, r, i):
global iterations
global x
global y
aa = 0
ba = 0
ab = 0
a = 0
b = 0
for j in range (n):
iterations += 1
aa = a * a
bb = b * b
ab = 2 * a * b
a = ((aa - bb) + float(r))
b = (ab + float(i))
if (ab + bb) > 4:
break
turtle.setx(100 * x)
turtle.sety(100 * y)
color(iterations, n)
turtle.pendown()
turtle.penup()
Iterate on the y's
def Julia (s, r, i, d):
global iterations
global y_set
global x
global y
global a
global b
y_set(s)
while len(y_set) > 0:
y = y_set[0]/360
del y_set[0]
x = -1.5
for n in range (round((700/(float(r)+1))+1)):
a = x
b = y
iterations = 0
repeat(10**d, r, i)
x += ((1/240)*s)
user input
real = input('Real: ')
imag = input('Imaginary: ')
Julia (1, real, imag, 100)
turtle.done()
python python-3.x turtle-graphics fractals
edited Nov 20 '18 at 23:45
cdlane
18k21144
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
add a comment |
I am attempting to translate a Julia set generator that I made previously to Python code. However, when the code is run, the turtle graphics window stops responding immediately and draws nothing. Have I done something horribly wrong or is there something I'm missing? Perhaps I'm asking too much of python to do in 1 frame. Please explain what is causing this to happen and how I can fix it. Thanks!
import turtle
import time
y_set =
map_output = 0
iterations = 0
#turtle.hideturtle()
#turtle.speed(1)
generate a list of y-values
def y_set (r):
global y_set
y_set =
for n in range ((360*2)+1):
y_set.append(n)
create a color value
def color (i, n):
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
iterate on the x's
def repeat (n, r, i):
global iterations
global x
global y
aa = 0
ba = 0
ab = 0
a = 0
b = 0
for j in range (n):
iterations += 1
aa = a * a
bb = b * b
ab = 2 * a * b
a = ((aa - bb) + float(r))
b = (ab + float(i))
if (ab + bb) > 4:
break
turtle.setx(100 * x)
turtle.sety(100 * y)
color(iterations, n)
turtle.pendown()
turtle.penup()
Iterate on the y's
def Julia (s, r, i, d):
global iterations
global y_set
global x
global y
global a
global b
y_set(s)
while len(y_set) > 0:
y = y_set[0]/360
del y_set[0]
x = -1.5
for n in range (round((700/(float(r)+1))+1)):
a = x
b = y
iterations = 0
repeat(10**d, r, i)
x += ((1/240)*s)
user input
real = input('Real: ')
imag = input('Imaginary: ')
Julia (1, real, imag, 100)
turtle.done()
python python-3.x turtle-graphics fractals
edited Nov 20 '18 at 23:45
cdlane
18k21144
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
What to you expect themap(i, 2, 10000, 0, 2500)to do?
– martineau
Nov 21 '18 at 0:35
I expected map to take a number 'i' within range 2 to 10000, and map it to a new range 0 to 2500. Is that not what this function is?
– Noah Gehlhausen
Nov 21 '18 at 15:58
No, that's not what the built-inmap()function does—although you might be able to use it to implement your own function that will. Strongly suggest you read its documentation.
– martineau
Nov 21 '18 at 16:49
add a comment |
I am attempting to translate a Julia set generator that I made previously to Python code. However, when the code is run, the turtle graphics window stops responding immediately and draws nothing. Have I done something horribly wrong or is there something I'm missing? Perhaps I'm asking too much of python to do in 1 frame. Please explain what is causing this to happen and how I can fix it. Thanks!
import turtle
import time
y_set =
map_output = 0
iterations = 0
#turtle.hideturtle()
#turtle.speed(1)
generate a list of y-values
def y_set (r):
global y_set
y_set =
for n in range ((360*2)+1):
y_set.append(n)
create a color value
def color (i, n):
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
iterate on the x's
def repeat (n, r, i):
global iterations
global x
global y
aa = 0
ba = 0
ab = 0
a = 0
b = 0
for j in range (n):
iterations += 1
aa = a * a
bb = b * b
ab = 2 * a * b
a = ((aa - bb) + float(r))
b = (ab + float(i))
if (ab + bb) > 4:
break
turtle.setx(100 * x)
turtle.sety(100 * y)
color(iterations, n)
turtle.pendown()
turtle.penup()
Iterate on the y's
def Julia (s, r, i, d):
global iterations
global y_set
global x
global y
global a
global b
y_set(s)
while len(y_set) > 0:
y = y_set[0]/360
del y_set[0]
x = -1.5
for n in range (round((700/(float(r)+1))+1)):
a = x
b = y
iterations = 0
repeat(10**d, r, i)
x += ((1/240)*s)
user input
real = input('Real: ')
imag = input('Imaginary: ')
Julia (1, real, imag, 100)
turtle.done()
python python-3.x turtle-graphics fractals
edited Nov 20 '18 at 23:45
cdlane
18k21144
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
I am attempting to translate a Julia set generator that I made previously to Python code. However, when the code is run, the turtle graphics window stops responding immediately and draws nothing. Have I done something horribly wrong or is there something I'm missing? Perhaps I'm asking too much of python to do in 1 frame. Please explain what is causing this to happen and how I can fix it. Thanks!
import turtle
import time
y_set =
map_output = 0
iterations = 0
#turtle.hideturtle()
#turtle.speed(1)
generate a list of y-values
def y_set (r):
global y_set
y_set =
for n in range ((360*2)+1):
y_set.append(n)
create a color value
def color (i, n):
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
iterate on the x's
def repeat (n, r, i):
global iterations
global x
global y
aa = 0
ba = 0
ab = 0
a = 0
b = 0
for j in range (n):
iterations += 1
aa = a * a
bb = b * b
ab = 2 * a * b
a = ((aa - bb) + float(r))
b = (ab + float(i))
if (ab + bb) > 4:
break
turtle.setx(100 * x)
turtle.sety(100 * y)
color(iterations, n)
turtle.pendown()
turtle.penup()
Iterate on the y's
def Julia (s, r, i, d):
global iterations
global y_set
global x
global y
global a
global b
y_set(s)
while len(y_set) > 0:
y = y_set[0]/360
del y_set[0]
x = -1.5
for n in range (round((700/(float(r)+1))+1)):
a = x
b = y
iterations = 0
repeat(10**d, r, i)
x += ((1/240)*s)
user input
real = input('Real: ')
imag = input('Imaginary: ')
Julia (1, real, imag, 100)
turtle.done()
python python-3.x turtle-graphics fractals
python python-3.x turtle-graphics fractals
edited Nov 20 '18 at 23:45
cdlane
18k21144
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
edited Nov 20 '18 at 23:45
cdlane
18k21144
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
edited Nov 20 '18 at 23:45
cdlane
18k21144
edited Nov 20 '18 at 23:45
cdlane
18k21144
edited Nov 20 '18 at 23:45
cdlane
18k21144
18k21144
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
asked Nov 20 '18 at 23:17
Noah GehlhausenNoah Gehlhausen
82
82
What to you expect themap(i, 2, 10000, 0, 2500)to do?
– martineau
Nov 21 '18 at 0:35
I expected map to take a number 'i' within range 2 to 10000, and map it to a new range 0 to 2500. Is that not what this function is?
– Noah Gehlhausen
Nov 21 '18 at 15:58
No, that's not what the built-inmap()function does—although you might be able to use it to implement your own function that will. Strongly suggest you read its documentation.
– martineau
Nov 21 '18 at 16:49
add a comment |
What to you expect themap(i, 2, 10000, 0, 2500)to do?
– martineau
Nov 21 '18 at 0:35
I expected map to take a number 'i' within range 2 to 10000, and map it to a new range 0 to 2500. Is that not what this function is?
– Noah Gehlhausen
Nov 21 '18 at 15:58
No, that's not what the built-inmap()function does—although you might be able to use it to implement your own function that will. Strongly suggest you read its documentation.
– martineau
Nov 21 '18 at 16:49
What to you expect the
map(i, 2, 10000, 0, 2500) to do?– martineau
Nov 21 '18 at 0:35
What to you expect the
map(i, 2, 10000, 0, 2500) to do?– martineau
Nov 21 '18 at 0:35
I expected map to take a number 'i' within range 2 to 10000, and map it to a new range 0 to 2500. Is that not what this function is?
– Noah Gehlhausen
Nov 21 '18 at 15:58
I expected map to take a number 'i' within range 2 to 10000, and map it to a new range 0 to 2500. Is that not what this function is?
– Noah Gehlhausen
Nov 21 '18 at 15:58
No, that's not what the built-in
map() function does—although you might be able to use it to implement your own function that will. Strongly suggest you read its documentation.– martineau
Nov 21 '18 at 16:49
No, that's not what the built-in
map() function does—although you might be able to use it to implement your own function that will. Strongly suggest you read its documentation.– martineau
Nov 21 '18 at 16:49
add a comment |
1 Answer
1
active
oldest
votes
There are too many problems with this code to focus on an algorithm error. When I try to run it, I get, TypeError: 'int' object is not iterable. Specific issues:
The i argument here is being passed a number:
iterations += 1
...
color(iterations, n)
...
def color(i, n):
output = map(i, 2, 10000, 0, 2500)
but Python's map function (and Julia's) expects a function as its first argument:
map(func, *iterables)
and it returns a list of the results of applying func to iterables but you treat the result as a scalar value:
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
The color() function never uses its second argument, and never returns anything!
The variables a & b here are being treated as globals, set but not used, as if prepared for use by repeat():
global a
global b
...
a = x
b = y
iterations = 0
repeat(10 ** d, r, i)
but the a & b used by repeat() are locals initialized to zero:
a = 0
b = 0
You have a function and global variable with the same name y_set!
And your globals are out of control.
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consideriterations. You make it a global and declare it as such but just before you callrepeat()you always set it to zero. That's no different than making it local torepeat()and tossing the global stuff.
– cdlane
Nov 21 '18 at 16:57
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
There are too many problems with this code to focus on an algorithm error. When I try to run it, I get, TypeError: 'int' object is not iterable. Specific issues:
The i argument here is being passed a number:
iterations += 1
...
color(iterations, n)
...
def color(i, n):
output = map(i, 2, 10000, 0, 2500)
but Python's map function (and Julia's) expects a function as its first argument:
map(func, *iterables)
and it returns a list of the results of applying func to iterables but you treat the result as a scalar value:
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
The color() function never uses its second argument, and never returns anything!
The variables a & b here are being treated as globals, set but not used, as if prepared for use by repeat():
global a
global b
...
a = x
b = y
iterations = 0
repeat(10 ** d, r, i)
but the a & b used by repeat() are locals initialized to zero:
a = 0
b = 0
You have a function and global variable with the same name y_set!
And your globals are out of control.
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consideriterations. You make it a global and declare it as such but just before you callrepeat()you always set it to zero. That's no different than making it local torepeat()and tossing the global stuff.
– cdlane
Nov 21 '18 at 16:57
add a comment |
There are too many problems with this code to focus on an algorithm error. When I try to run it, I get, TypeError: 'int' object is not iterable. Specific issues:
The i argument here is being passed a number:
iterations += 1
...
color(iterations, n)
...
def color(i, n):
output = map(i, 2, 10000, 0, 2500)
but Python's map function (and Julia's) expects a function as its first argument:
map(func, *iterables)
and it returns a list of the results of applying func to iterables but you treat the result as a scalar value:
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
The color() function never uses its second argument, and never returns anything!
The variables a & b here are being treated as globals, set but not used, as if prepared for use by repeat():
global a
global b
...
a = x
b = y
iterations = 0
repeat(10 ** d, r, i)
but the a & b used by repeat() are locals initialized to zero:
a = 0
b = 0
You have a function and global variable with the same name y_set!
And your globals are out of control.
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consideriterations. You make it a global and declare it as such but just before you callrepeat()you always set it to zero. That's no different than making it local torepeat()and tossing the global stuff.
– cdlane
Nov 21 '18 at 16:57
add a comment |
There are too many problems with this code to focus on an algorithm error. When I try to run it, I get, TypeError: 'int' object is not iterable. Specific issues:
The i argument here is being passed a number:
iterations += 1
...
color(iterations, n)
...
def color(i, n):
output = map(i, 2, 10000, 0, 2500)
but Python's map function (and Julia's) expects a function as its first argument:
map(func, *iterables)
and it returns a list of the results of applying func to iterables but you treat the result as a scalar value:
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
The color() function never uses its second argument, and never returns anything!
The variables a & b here are being treated as globals, set but not used, as if prepared for use by repeat():
global a
global b
...
a = x
b = y
iterations = 0
repeat(10 ** d, r, i)
but the a & b used by repeat() are locals initialized to zero:
a = 0
b = 0
You have a function and global variable with the same name y_set!
And your globals are out of control.
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
There are too many problems with this code to focus on an algorithm error. When I try to run it, I get, TypeError: 'int' object is not iterable. Specific issues:
The i argument here is being passed a number:
iterations += 1
...
color(iterations, n)
...
def color(i, n):
output = map(i, 2, 10000, 0, 2500)
but Python's map function (and Julia's) expects a function as its first argument:
map(func, *iterables)
and it returns a list of the results of applying func to iterables but you treat the result as a scalar value:
output = map(i, 2, 10000, 0, 2500)
if output < 0:
output = 0
if output > 0:
output = 255
The color() function never uses its second argument, and never returns anything!
The variables a & b here are being treated as globals, set but not used, as if prepared for use by repeat():
global a
global b
...
a = x
b = y
iterations = 0
repeat(10 ** d, r, i)
but the a & b used by repeat() are locals initialized to zero:
a = 0
b = 0
You have a function and global variable with the same name y_set!
And your globals are out of control.
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
edited Nov 21 '18 at 0:08
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
answered Nov 20 '18 at 23:41
cdlanecdlane
18k21144
18k21144
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consideriterations. You make it a global and declare it as such but just before you callrepeat()you always set it to zero. That's no different than making it local torepeat()and tossing the global stuff.
– cdlane
Nov 21 '18 at 16:57
add a comment |
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consideriterations. You make it a global and declare it as such but just before you callrepeat()you always set it to zero. That's no different than making it local torepeat()and tossing the global stuff.
– cdlane
Nov 21 '18 at 16:57
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
It seems I misunderstood what the map function did. I thought it maped a number from one range to another. As for the color, I simply took out the 'n' for testing purposes. Also, whoops, didn't realise y-set was a function and a variable. Thanks so much for your help!
– Noah Gehlhausen
Nov 21 '18 at 16:02
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
Thanks for the help. But what do you mean by my globals are "out of control". This is the solution I have been using for over a year when it comes to letting 2 or more functions modify the same variable. Also, even after fixing everything else you brought up, the turtle graphics window still won't respond.
– Noah Gehlhausen
Nov 21 '18 at 16:12
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@Noah: Global variables are generally considered a poor programming practice. The article Global Variables Are Bad describes some of the reasons why.
– martineau
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consider
iterations. You make it a global and declare it as such but just before you call repeat() you always set it to zero. That's no different than making it local to repeat() and tossing the global stuff.– cdlane
Nov 21 '18 at 16:57
@NoahGehlhausen, globals-wise, consider
iterations. You make it a global and declare it as such but just before you call repeat() you always set it to zero. That's no different than making it local to repeat() and tossing the global stuff.– cdlane
Nov 21 '18 at 16:57
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What to you expect the
map(i, 2, 10000, 0, 2500)to do?– martineau
Nov 21 '18 at 0:35
I expected map to take a number 'i' within range 2 to 10000, and map it to a new range 0 to 2500. Is that not what this function is?
– Noah Gehlhausen
Nov 21 '18 at 15:58
No, that's not what the built-in
map()function does—although you might be able to use it to implement your own function that will. Strongly suggest you read its documentation.– martineau
Nov 21 '18 at 16:49