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Author: neelshah2409

Python/Checklist App/main.py

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+from tkinter import *
+from tkinter import messagebox
+#Define the root window
+root=Tk()
+root.title("My Checklist App")
+root.geometry("400x400")
+root.resizable(0,0)
+
+
+#setting up app theme - font and colours
+myFont=("Times New Roman",12)
+rootColour = "#3b5998"
+buttonColour = "#f7f7f7"
+
+#changing root bg
+root.config(bg=rootColour)
+
+#FUNCTIONS
+#ADD ITEM FUNCTION
+def addItem():
+    if listEntry.get() == "":
+        messagebox.showinfo("Illegal Entry","Cannot Enter Blank Items")
+    else:
+        listBox.insert(END,listEntry.get())
+        listEntry.delete(0,END)
+#REMOVE ITEM FUNCTION
+def removeItem():
+    listBox.delete(ANCHOR)
+#CLEAR LIST FUNCTION
+def clearList():
+    listBox.delete(0,END)
+
+#SAVE LIST FUNCTION
+def saveList():
+    with open('checklist.txt','w') as f:
+        toSaveList = listBox.get(0,END)
+        #print(toSaveList)
+        for element in toSaveList:
+            if element.endswith("\n"):
+                f.write(element)
+            else:
+                f.write(element+"\n")
+
+#READING FROM FILE WHEN ALL REOPENS
+def openList():
+    try:
+        with open('checklist.txt','r') as f:
+            for line in f:
+                listBox.insert(END,line)
+    except:
+        return
+
+#defining the layout of the app
+
+#FRAMES LAYOUT
+inputFrame = Frame(root,bg=rootColour)
+outputFrame = Frame(root,bg=rootColour)
+buttonFrame = Frame(root,bg=rootColour)
+inputFrame.pack()
+outputFrame.pack()
+buttonFrame.pack()
+
+#LAYOUT OF INPUT FRAME ELEMENTS
+listEntry = Entry(inputFrame,width=35,borderwidth=3,font=myFont)
+listAddButton = Button(inputFrame,text="Add Item",borderwidth=2,font=myFont,bg=buttonColour,command=addItem)
+listEntry.grid(row=0,column=0,padx=5,pady=5)
+listAddButton.grid(row=0,column=1,padx=5,pady=5,ipadx=5)
+
+#LAYOUT OF OUTPUT FRAME
+#Add scrollbar
+scrollBar=Scrollbar(outputFrame)
+listBox = Listbox(outputFrame,height=15,width=45,borderwidth=3,font=myFont,yscrollcommand=scrollBar.set)
+scrollBar.config(command=listBox.yview )
+listBox.grid(row=0,column=0)
+scrollBar.grid(row=0,column=1,sticky="NS")
+
+
+#LAYOUT OF BUTTON FRAME
+listRemoveButton = Button(buttonFrame,text="Remove Item",borderwidth=2,font=myFont,bg=buttonColour,command=removeItem)
+listClearButton = Button(buttonFrame,text="Clear List",borderwidth=2,font=myFont,bg=buttonColour,command=clearList)
+saveButton = Button(buttonFrame,text="Save",borderwidth=2,font=myFont,bg=buttonColour,command=saveList)
+quitButton = Button(buttonFrame,text="Quit",command=root.destroy,borderwidth=2,font=myFont,bg=buttonColour)
+listRemoveButton.grid(row=0,column=0,padx=2,pady=10)
+listClearButton.grid(row=0,column=1,padx=2,pady=10,ipadx=10)
+saveButton.grid(row=0,column=2,padx=2,pady=10,ipadx=15)
+quitButton.grid(row=0,column=30,padx=2,pady=10,ipadx=15)
+openList()
+root.mainloop()