How to get checkbox values to save into a text file?
Your var_states function doesn't actually return anything. It just prints to the console. Change it to:
def var_states(): res = "Option 1: %d\nOption 2: %d" % (var1.get(), var2.get()) print(res) return resAlso, instead of manually opening and closeing files, you should use with:
with open("output.txt", "w") as f: f.write(var_states())#open and read the file after the appending:with open("output.txt", "r") as f: print(f.read())The file is automatically closed at the end of the with block.