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from Tkinter import *
root = Tk()
fram = Frame(root)
Label(fram,text='Text to find:').pack(side=LEFT)
edit = Entry(fram)
edit.pack(side=LEFT, fill=BOTH, expand=1)
edit.focus_set()
butt = Button(fram, text='Find')
butt.pack(side=RIGHT)
fram.pack(side=TOP)
text = Text(root)
text.insert('1.0','''Search text
Here
''')
text.pack(side=BOTTOM)
def find():
text.tag_remove('found', '1.0', END)
s = edit.get()
if s:
idx = '1.0'
while 1:
idx = text.search(s, idx, nocase=1, stopindex=END)
if not idx: break
lastidx = '%s+%dc' % (idx, len(s))
text.tag_add('found', idx, lastidx)
idx = lastidx
text.tag_config('found', foreground='red')
edit.focus_set()
butt.config(command=find)
root.mainloop()
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