import os
def main():
fp = raw_input('Filename: ')
if fp and os.path.isfile(fp):
with open(fp, 'r') as f:
txt = f.read()
newfp = '{0}_upper{1}'.format(*os.path.splitext(fp))
with open(newfp, 'w') as f:
f.write(txt.upper())
if __name__ == '__main__':
main()
使用Python 2.7.6,这对我很有用:
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