Not really. PCEP is made for beginners, so someone already working as a developer won't gain much from it. The exam sticks to basic syntax, data types, loops, and simple problem-solving, stuff most working developers already know well. It's kind of like taking a driving test again after years of driving; it proves you know the basics, but nobody really needs that proof at that point.
That said, it can still make sense in a few cases, like switching into a more formal tech role and needing to show basic knowledge on paper, or if a company specifically asks for an entry-level credential as part of hiring. Outside of that, PCEP mainly works as a starting point for junior Python roles, not something built for experienced developers.
If you want to see what the certification actually covers and where it can lead next, CertBoosters has more detail on the PCEP career path and related roles: https://www.certboosters.com/python-institute/path/certified-entry-level-python-programmer