Explore the decade-long journey of PyCon JP and its impact on spreading the Python community throughout Japan in this informative conference talk. Discover how the event evolved from its humble beginnings to a large-scale conference, and learn about the various initiatives undertaken to promote Python across the country. Gain insights into the establishment of the PyCon JP Association, the organization of regional PyCon mini events, and the successful Python Boot Camp program. Understand the strategies used to foster local communities, strengthen connections between regions, and expand Python's reach. Reflect on the importance of face-to-face meetings and reunions in building a strong community. Finally, get a glimpse of future plans for PyCon JP and the ongoing efforts to conquer all prefectures with Python-related activities.