Geetansh G
Reputation: 17
Python tkinter can't use Entry.get() fucntion
So I have been working on a quizzing application for some time now (about 4 days). I managed to make all the logical part of the code (the quiz taking, the quiz question handling, score outputting, etc.) I know that this code is neither the best nor the most efficient as it can be but I'm just a beginner. Anyways, the get() function for the entry function for tkinter does not return anything. I am aware that there is a way to fix it however I'm not sure how to implement the solution with an external loop. Please help me. Here is my code:
import random
from time import sleep
import tkinter as tk
from tkinter import *
import threading
class App(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.start()
def callback(self):
self.root.quit()
def run(self):
self.root = tk.Tk()
self.root.protocol("WM_DELETE_WINDOW", self.callback)
#label = tk.Label(self.root, text="Hello World")
#label.pack()
#Button(self.root, text = "Choose", command=btnPressed).pack()
tk.Label(self.root, text="Answer: ").grid(row=0,column=0)
#answerField_get = StringVar()
answerField = tk.Entry(self.root)
answerField.grid(row=0, column=1)
#Button(self.root, text='Show').grid(row=3, column=1, sticky=tk.W, pady=4)
print(str(answerField.get()))
Button(self.root, text='Show', command = lambda arg1=answerField.get():btnPressed("<"+str(arg1)+">")).grid(row=3, column=1, sticky=tk.W, pady=4)
self.root.mainloop()
def sendTMP(self, sendStr):
btnPressed(sendStr)
SCORE_SET = []
qasTmp = {}
qas = {}
qasSequenced = {}
incorrectResponses = []
incorrectResponses_replies = []
quiztaker_name = ""
attachAnsCode = "%% Fun fact: rgb computer parts lovers are somewhat weird hehe %%********^^&&^^&&^^&&"
qasQsSequenced = False
qasQsL = 0
qasQsL_divisionFactor = 2
qasINDEX = 0
err_noCode = "<!>NO_CODE<!>"
codes_answerCorrect = "A_C"
codes_answerIncorrect = "A_I"
answerCode = err_noCode
score = 0
randQs = False
# File
# the metadata will corrupt the reading from the file, a separate file, created in the targeted system, must be used to properly read the data.
# comment out the file name that is not being used.
filename_windows = "qas-windows"
filename_rpi = "qas-rpi"
filename = filename_windows
fileformat = "txt"
file_name_format = filename + "." + fileformat
spaceIndicator = "|"
char_commentLine_qasFile = "*"
char_newline = "`"
print("Information about modes: ")
print(" *Easy: No point deductions for an incorrect response")
print(" *Hard: One point deducted for every incorrect response")
modes_err = "0"
modes_ez = "1"
modes_hard = "2"
gameOn = False
selectedMode = modes_err
askReplay = True
data_prev = []
with open("SCORES.txt", 'r') as scores_prev:
data_prev = scores_prev.readlines()
scores_prev.close()
for i in range(0, len(data_prev)):
SCORE_SET.append(data_prev[i])
def btnPressInform():
print("A button has been pressed!")
def importAndClean():
# import questions from qas-windows.txt
with open(file_name_format, 'r') as document:
for line in document:
if line.strip():
key, value = line.split(None, 1)
if key[0] != char_commentLine_qasFile: # Custom comments for the txt file
qasTmp[key] = value.split()
# Clean up dictionary input from the txt file
for i in range(0, len(qasTmp)): # FIVE FOR LOOPS!!!! (FOUR IN THIS ONE)
for ii in qasTmp:
output = ""
output_ans = ""
for iii in range(0, len(ii)):
if ii[iii] != spaceIndicator:
output += ii[iii]
else:
output += " "
for iiii in range(0, len(qasTmp[ii])):
TEMP = str(qasTmp[ii])
for iiiii in range(2, len(TEMP) - 2): # IGNORE [' and ']
# print(TEMP[iiiii])
if TEMP[iiiii] != spaceIndicator:
output_ans += TEMP[iiiii]
else:
output_ans += " "
# print(output + " : " + output_ans) #Output question: answer
qas[output] = output_ans
importAndClean()
def getL():
qasQsL = len(qas) / qasQsL_divisionFactor # only ask 1/qasQsL_divisionFactor the questions
qasQsL = int(qasQsL) # round to an integer as odd numbers will end in .5 after division
if qasQsL < 1:
qasQsL = 1 # Have atleast ONE question
return qasQsL
def debug1(keys, vals, index, i):
print(str(index) + "/" + str((len(keys) - 1)))
print(keys)
print(vals)
print()
print(keys[index] + " : " + vals[index] + "\n")
print("Sorting original index " + str(i) + " at random index " + str(index))
def debug2(keys, vals, index):
print(keys)
print(vals)
print("\n")
def debugFinal():
print("Temp (OG reading): ")
print(qasTmp)
print("\nQAS (Non-sequenced, cleaned): ")
print(qas)
print("\nQAS Sequenced (Randomly sequenced, cleaned): ")
print(qasSequenced)
def randomize(qasQsL_tmp):
qas_keys = list(qas.keys())
qas_vals = list(qas.values())
if randQs == False:
qasQsL_tmp = len(qas_keys) # all questions
print("You will be asked all " + str(qasQsL_tmp) + " questions")
else:
qasQsL_tmp = getL() # random question
print("You will be asked " + str(qasQsL_tmp) + " questions out of " + str(len(qas)) + " possible questions!")
print("\n\nRandomly sequencing questions...")
for i in range(0, qasQsL_tmp):
INDEX = random.randint(0, qasQsL_tmp - 1)
# debug1(qas_keys, qas_vals, INDEX, i)
qasSequenced[qas_keys[INDEX]] = qas_vals[INDEX]
qas_keys.pop(INDEX)
qas_vals.pop(INDEX)
qasQsL_tmp -= 1
# debug2(qas_keys, qas_vals, INDEX)
sleep(0.05)
# debugFinal()
print("Done sequencing! Starting quiz now! \n\n")
return "0"
def quizController(index):
qas_keys = list(qasSequenced.keys())
qas_vals = list(qasSequenced.values())
# print(qas_keys)
# print(qas_vals)
lines = []
lines_index = 0
tmp = ""
# Splitter
for i in range(0, len(qas_keys[index])):
if lines_index < len(qas_keys[index]) - 1:
if qas_keys[index][i] != char_newline:
tmp += qas_keys[index][i]
else:
lines.append(tmp)
tmp = ""
lines.append(tmp)
# Multiple choice
mChoiceQ = False
mChoice_startBrackets = 0
mChoice_endBrackets = 0
mChoice_options = []
mChoice_numOptions = 0
mChoice_seperatorsAt = []
for i in range(0, len(qas_keys[index])):
if qas_keys[index][i] == "[":
mChoice_startBrackets = i
mChoiceQ = True
elif qas_keys[index][i] == "]":
mChoice_endBrackets = i
elif qas_keys[index][i] == "/":
mChoice_seperatorsAt.append(i)
if mChoiceQ == True:
TEMP = ""
for i in range(mChoice_startBrackets, mChoice_endBrackets + 1):
if qas_keys[index][i] != "[":
if qas_keys[index][i] != "/" and qas_keys[index][i] != "]":
TEMP += qas_keys[index][i]
else:
mChoice_options.append(TEMP)
TEMP = ""
mChoice_numOptions = len(mChoice_seperatorsAt) + 1
# Default options (yes, no) full names
for i in range(0, len(mChoice_options)):
if mChoice_options[i].lower() == "y":
mChoice_options.append("yes")
elif mChoice_options[i].lower() == "n":
mChoice_options.append("no")
# if mChoiceQ == True:
# print("It is a multiple choice question! There are " + str(mChoice_numOptions) + " options. They are: ")
# print(mChoice_options)
print("\nQuestion " + str(index + 1) + "/" + str(qasQsL) + ":")
for i in range(0, len(lines)):
print(lines[i])
# answer = ""
answer = input(">")
# answer = input(qas_keys[index]+ ": ")
if mChoiceQ == False:
if len(answer) > 0:
if answer.lower() == str(qas_vals[index]).lower():
return codes_answerCorrect
else:
incorrectResponses.append(qas_keys[index])
incorrectResponses_replies.append(answer)
# print("DEBUG: Incorrect response! Expected '" + str(qas_vals[index]).lower() + "', received " + answer.lower())
return codes_answerIncorrect
else:
print("Please insert an answer!")
else:
allowedResponse = False
for i in range(0, len(mChoice_options)):
if answer.lower() == mChoice_options[i].lower():
allowedResponse = True
if allowedResponse == True:
ans = qas_vals[index].lower()
yn = False
ans_yesno = ""
if ans.lower() == "y" or ans.lower() == "n":
yn = True
else:
yn = False
if yn == True:
if ans == "y":
ans_yesno = "yes"
elif ans == "n":
ans_yesno = "no"
if len(answer) > 0:
if yn == True:
if answer.lower() == ans.lower() or answer.lower() == ans_yesno.lower():
return codes_answerCorrect
else:
return codes_answerIncorrect
incorrectResponses.append(qas_keys[index])
incorrectResponses_replies.append(answer)
else:
if answer.lower() == ans.lower():
return codes_answerCorrect
else:
return codes_answerIncorrect
incorrectResponses.append(qas_keys[index])
incorrectResponses_replies.append(answer)
else:
print("Please insert an answer!")
else:
print("Invalid response! You may only enter the following: " + str(mChoice_options))
def saveScore():
# Clear file!
score_file_CLEAR = open("SCORES.txt", "wt")
score_file_CLEAR.close()
# Save contents
score_file = open("SCORES.txt", "wt")
for i in range(0, len(SCORE_SET)):
score_file.write(SCORE_SET[i])
print("Done saving!")
def btnPressed(tmp):
print(tmp)
app = App()
while True:
qasQsL = len(qasSequenced)
if gameOn == True and selectedMode != modes_err:
if qasQsSequenced == True:
if qasINDEX < qasQsL:
answerCode = quizController(qasINDEX)
else:
output = randomize(qasQsL)
if output == "0":
qasQsSequenced = True
if qasINDEX < qasQsL:
if answerCode == codes_answerCorrect:
score += 1
qasINDEX += 1
# print("DEBUG: Correct! Score set to: " + str(score))
elif answerCode == codes_answerIncorrect:
if selectedMode == modes_hard:
score -= 1
qasINDEX += 1
# print("Score set to: " + str(score))
else:
print("")
if qasQsL != 0:
score_per = score / qasQsL
if score_per < 0:
score_per = 0
if score < 0:
score = 0
print("You score was lower than 0, therefore it was set to 0")
# print("Your score: " + str(score) + "/" + str(len(qasSequenced)) + " (" + str(int(score_per*100)) + "%)")
# if score != qasQsL:
# print("You responded to the following questions incorrectly:")
# print(incorrectResponses)
if score / qasQsL == 1:
SCORE_SET.append(quiztaker_name + " scored " + str(score) + " out of " + str(qasQsL) + "(" + str(
int(score / qasQsL) * 100) + "%). PART OF Qs: " + str(
int(randQs)) + " at division factor 1/" + str(qasQsL_divisionFactor) + ", MODE: " + str(
int(selectedMode)) + "\n")
if score / qasQsL != 1:
SCORE_SET.append(quiztaker_name + " scored " + str(score) + " out of " + str(qasQsL) + " (" + str(
int(score / qasQsL) * 100) + "%). PART OF Qs: " + str(
int(randQs)) + " at division factor 1/" + str(qasQsL_divisionFactor) + ", MODE: " + str(
int(selectedMode)) + " They got the following questions wrong: \n")
for i in range(0, len(incorrectResponses)):
SCORE_SET.append(" " + str(i + 1) + ") " + incorrectResponses[i] + " --RESPONSE-- " +
incorrectResponses_replies[i] + "\n")
SCORE_SET.append("\n")
saveScore()
qasQsSequenced = False
gameOn = False
print("\nGame over!")
askReplay = True
else:
continue
elif askReplay == False:
TEMP = input("What mode would you like? (E = Easy, H = Hard): ")
if len(str(TEMP)) > 0:
if str(TEMP).lower() == "e":
selectedMode = modes_ez
gameOn = True
print("Set mode to: NO POINT DEDUCTIONS")
elif str(TEMP).lower() == "h":
selectedMode = modes_hard
gameOn = True
print("Set mode to: POINT DEDUCTIONS ALLOWED")
else:
print("Error: Undefined response. Please try again!")
elif askReplay == True:
TEMP = input("Would you like to (re)do the quiz? (Y/N): ")
if len(str(TEMP)) > 0:
if str(TEMP).lower() == "y":
askReplay = False
qasQsSequenced = False
qasQsL = 0
qas.clear()
qasSequenced.clear()
qasTmp.clear()
qasINDEX = 0
incorrectResponses.clear()
answerCode = err_noCode
score = 0
selectedMode = modes_err
importAndClean()
randQs = False
USER_TEMP = input("Please enter your name >")
if len(USER_TEMP) > 0:
quiztaker_name = str(USER_TEMP)
print("Welcome " + quiztaker_name + "!")
USER_TEMP = input("Would you like all questions (a) or a part of the questions(p)? (A/P) > ")
if len(USER_TEMP) > 0:
if USER_TEMP.lower() == "a":
print("Set to all questions!")
randQs = False
elif USER_TEMP.lower() == "p":
print("Set to 1/" + str(qasQsL_divisionFactor) + " questions (pre-set variable)")
randQs = True
else:
print("Undefined response! Setting to default value (ALL)")
randQs = False
gameOn = False
askReplay = False
elif str(TEMP).lower() == "n":
selectedMode = modes_hard
gameOn = False
print("Exiting now!")
saveScore()
sleep(2)
exit(0)
else:
print("Error: Undefined response. Please try again!")
Upvotes: 0
Views: 69
Answers (1)
furas
Reputation: 142631
Entry() doesn't work like input(). It doesn't wait for your data but it only informs tkitner that you want to display Entry widget (and mainloop() will display it) and Python goes to next lines of code and it runs print(str(answerField.get())) before it even displays window - so you try to get from empty Entry.
You should get it in function assigned to Button which you will press after you put some text in Entry.
The same problem is with
lambda arg1=self.answerField.get():print(arg1)
it assigns to args value from Entry only once when lambda is defined at start - so it get empty string. You should use it inside function
command=lambda:print(self.answerField.get())
or create normal function and assign to button.
Minimal working code
import tkinter as tk
import threading
class App(threading.Thread):
def run(self):
self.root = tk.Tk()
#self.root.protocol("WM_DELETE_WINDOW", self.on_close)
self.answerField = tk.Entry(self.root)
self.answerField.grid(row=0, column=1)
#b = tk.Button(self.root, text='Show', command=lambda:print(self.answerField.get()))
b = tk.Button(self.root, text='Show', command=self.on_click)
b.grid(row=1, column=1)
self.root.mainloop()
def on_click(self):
print(self.answerField.get())
#def on_close(self):
# self.root.destroy()
App().start()
#App().run()
Upvotes: 1
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