cpython/Demo/tkinter/guido/wish.py

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# This is about all it requires to write a wish shell in Python!
import tkinter
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import os
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tk = tkinter.create(os.environ['DISPLAY'], 'wish', 'Tk', 1)
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tk.call('update')
cmd = ''
while 1:
if cmd: prompt = ''
else: prompt = '% '
try:
line = raw_input(prompt)
except EOFError:
break
cmd = cmd + (line + '\n')
if tk.getboolean(tk.call('info', 'complete', cmd)):
tk.record(line)
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try:
result = tk.call('eval', cmd)
except tkinter.TclError, msg:
print 'TclError:', msg
else:
if result: print result
cmd = ''