I was wondering how I can display an error if the entry is not an integer. I was able to make it so my code will only accept a certain range of integers, but I don't have a way to display an error if letters are given instead. I was wondering if someone can shed some knowledge.. Thanks!
def get(self):
c = int(self.a.get())
d = int(self.b.get())
if c>255 or c<0 or d>255 or d<0 :
print c
tkMessageBox.showerror("Error2", "Please enter a value between 0-255")
self.clicked_wbbalance()
if c<255 and c>0 and d<255 and d>0:
print "it worked"
pass
Use str.isdigit()
to check whether the input is integer or not:
In [5]: "123".isdigit()
Out[5]: True
In [7]: "123.3".isdigit()
Out[7]: False
In [8]: "foo".isdigit()
Out[8]: False
so you code becomes something like this:
def get(self):
c = self.a.get()
d = self.b.get()
if c.isdigit() and d.isdigit():
c,d=int(c),int(d)
if c>255 or c<0 or d>255 or d<0 :
print c
tkMessageBox.showerror("Error2", "Please enter a value between 0-255")
self.clicked_wbbalance()
elif c<255 and c>0 and d<255 and d>0:
print "it worked"
pass
else:
print "input is not an integer"
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