Default text as well as list textvariable Entry widget Tkinter

In order to put default text in your Entry widget, you can use the insert() method as described here.

box.insert(0, "Value 1")    # Set default text at cursor position 0.

Now in order to change the contents of box after the user performs a mouse click inside the box, you will need to bind an event to the Entry object. For example, the following code deletes the contents of the box when it is clicked. (You can read about event and bindings here.) Below I show a full example of this.

Note that deleting the text in the box is probably only practical for the first click (i.e. when deleting the default contents), so I created a global flag clicked to keep track of whether it has been clicked.

from tkinter import Tk, Entry, END    # Python3. For Python2.x, import Tkinter.# Use this as a flag to indicate if the box was clicked.global clicked   clicked = False# Delete the contents of the Entry widget. Use the flag# so that this only happens the first time.def callback(event):    global clicked    if (clicked == False):        box[0].delete(0, END)         #          box[0].config(fg = "black")   # Change the colour of the text here.        clicked = Trueroot = Tk()box = []                              # Declare a list for the Entry widgets.box.append(Entry(fg = "gray"))        # Create an Entry box with gray text.box[0].bind("<Button-1>", callback)   # Bind a mouse-click to the callback function.box[0].insert(0, "Value 1")           # Set default text at cursor position 0.box.append(Entry(fg = "gray"))        # Make a 2nd Entry; store a reference to it in box.box[1].insert(0, "Value 2")box[0].pack()                         #box[1].pack()if __name__ == "__main__":    root.mainloop()