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# test match.span(), and nested spans
try:
import re
except ImportError:
print("SKIP")
raise SystemExit
try:
m = re.match(".", "a")
m.span
except AttributeError:
print("SKIP")
raise SystemExit
def print_spans(match):
print("----")
try:
i = 0
while True:
print(match.span(i), match.start(i), match.end(i))
i += 1
except IndexError:
pass
m = re.match(r"(([0-9]*)([a-z]*)[0-9]*)", "1234hello567")
print_spans(m)
m = re.match(r"([0-9]*)(([a-z]*)([0-9]*))", "1234hello567")
print_spans(m)
# optional span that matches
print_spans(re.match(r"(a)?b(c)", "abc"))
# optional span that doesn't match
print_spans(re.match(r"(a)?b(c)", "bc"))
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