How to init a Tkinter canvas dependent on a main Tkinter window
I am new to programing and am currently trying to do a program that draws graphs for affine functions (functions under the form f(x)=ax+b) with the Tkinter python library. I am doing a class called graph but when I want to init the canvas object it must be dependent to a frame. How can I init the main frame and a canvas object inside of a class? Here is the code:
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=tkinter.Tk(), graphing_area=tkinter.Canvas(graph, height=500, width=500)):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
self.graph = graph
self.graphing_area = graphing_area
python class tkinter
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
add a comment |
I am new to programing and am currently trying to do a program that draws graphs for affine functions (functions under the form f(x)=ax+b) with the Tkinter python library. I am doing a class called graph but when I want to init the canvas object it must be dependent to a frame. How can I init the main frame and a canvas object inside of a class? Here is the code:
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=tkinter.Tk(), graphing_area=tkinter.Canvas(graph, height=500, width=500)):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
self.graph = graph
self.graphing_area = graphing_area
python class tkinter
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
Make sure that you calltkinter.Tk()exactly once. That doesn't just create the root window, it also creates an instance of the Tcl interpreter that controls the GUI.
– PM 2Ring
Nov 23 '18 at 12:35
add a comment |
I am new to programing and am currently trying to do a program that draws graphs for affine functions (functions under the form f(x)=ax+b) with the Tkinter python library. I am doing a class called graph but when I want to init the canvas object it must be dependent to a frame. How can I init the main frame and a canvas object inside of a class? Here is the code:
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=tkinter.Tk(), graphing_area=tkinter.Canvas(graph, height=500, width=500)):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
self.graph = graph
self.graphing_area = graphing_area
python class tkinter
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
I am new to programing and am currently trying to do a program that draws graphs for affine functions (functions under the form f(x)=ax+b) with the Tkinter python library. I am doing a class called graph but when I want to init the canvas object it must be dependent to a frame. How can I init the main frame and a canvas object inside of a class? Here is the code:
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=tkinter.Tk(), graphing_area=tkinter.Canvas(graph, height=500, width=500)):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
self.graph = graph
self.graphing_area = graphing_area
python class tkinter
python class tkinter
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
edited Nov 23 '18 at 14:19
patthoyts
22.9k24270
22.9k24270
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
asked Nov 23 '18 at 12:20
JonathcraftJonathcraft
154
154
Make sure that you calltkinter.Tk()exactly once. That doesn't just create the root window, it also creates an instance of the Tcl interpreter that controls the GUI.
– PM 2Ring
Nov 23 '18 at 12:35
add a comment |
Make sure that you calltkinter.Tk()exactly once. That doesn't just create the root window, it also creates an instance of the Tcl interpreter that controls the GUI.
– PM 2Ring
Nov 23 '18 at 12:35
Make sure that you call
tkinter.Tk() exactly once. That doesn't just create the root window, it also creates an instance of the Tcl interpreter that controls the GUI.– PM 2Ring
Nov 23 '18 at 12:35
Make sure that you call
tkinter.Tk() exactly once. That doesn't just create the root window, it also creates an instance of the Tcl interpreter that controls the GUI.– PM 2Ring
Nov 23 '18 at 12:35
add a comment |
1 Answer
1
active
oldest
votes
Initiate values of graph and graphing_area outside arguments section. If you want option to set graph as function parameter set graph parameter to None by default and set self.graph to graph only if value is different that None.
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=None):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
if not graph:
self.graph = tkinter.Tk()
else:
self.graph = graph
self.graphing_area = tkinter.Canvas(self.graph, height=500, width=500)
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
add a comment |
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1 Answer
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oldest
votes
1 Answer
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active
oldest
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active
oldest
votes
Initiate values of graph and graphing_area outside arguments section. If you want option to set graph as function parameter set graph parameter to None by default and set self.graph to graph only if value is different that None.
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=None):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
if not graph:
self.graph = tkinter.Tk()
else:
self.graph = graph
self.graphing_area = tkinter.Canvas(self.graph, height=500, width=500)
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
add a comment |
Initiate values of graph and graphing_area outside arguments section. If you want option to set graph as function parameter set graph parameter to None by default and set self.graph to graph only if value is different that None.
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=None):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
if not graph:
self.graph = tkinter.Tk()
else:
self.graph = graph
self.graphing_area = tkinter.Canvas(self.graph, height=500, width=500)
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
add a comment |
Initiate values of graph and graphing_area outside arguments section. If you want option to set graph as function parameter set graph parameter to None by default and set self.graph to graph only if value is different that None.
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=None):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
if not graph:
self.graph = tkinter.Tk()
else:
self.graph = graph
self.graphing_area = tkinter.Canvas(self.graph, height=500, width=500)
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
Initiate values of graph and graphing_area outside arguments section. If you want option to set graph as function parameter set graph parameter to None by default and set self.graph to graph only if value is different that None.
class Graph:
def __init__(self, a="", b="", dimensions=None, graduation=None, graph=None):
self.a = a
self.b = b
self.dimensions = dimensions
self.graduation = graduation
if not graph:
self.graph = tkinter.Tk()
else:
self.graph = graph
self.graphing_area = tkinter.Canvas(self.graph, height=500, width=500)
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
answered Nov 23 '18 at 12:31
Filip MłynarskiFilip Młynarski
1,5781311
1,5781311
add a comment |
add a comment |
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Make sure that you call
tkinter.Tk()exactly once. That doesn't just create the root window, it also creates an instance of the Tcl interpreter that controls the GUI.– PM 2Ring
Nov 23 '18 at 12:35