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# Tests StringIO and cStringIO
def do_test(module):
s = ("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"+'\n')*5
f = module.StringIO(s)
print f.read(10)
print f.readline()
print len(f.readlines(60))
f = module.StringIO()
f.write('abcdef')
f.seek(3)
f.write('uvwxyz')
f.write('!')
print `f.getvalue()`
f.close()
f = module.StringIO()
f.writelines(["a", "b", "c"])
f.seek(0)
print `f.getvalue()`
f.close()
f = module.StringIO()
f.write(s)
f.seek(10)
f.truncate()
print `f.getvalue()`
f.seek(0)
f.truncate(5)
print `f.getvalue()`
f.close()
try:
f.write("frobnitz")
except ValueError, e:
print "Caught expected ValueError writing to closed StringIO:"
print e
else:
print "Failed to catch ValueError writing to closed StringIO."
import StringIO, cStringIO
do_test(StringIO)
do_test(cStringIO)
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