import re
def count_journey_segments(journey_log):
"""
Count the number of journey segments in the log.
The function expects a string return a long integer.
"""
if not journey_log:
return 0
# Pattern matches: journey_log[i]='segment_name'
pattern = r"journey_log\[\d+\]='([^']+)'"
matches = re.findall(pattern, journey_log)
result = len(matches)
print(result)
return result
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