Do i have to wait 6 months after getting a permit to get my license even though im turning 18 in 4 months?

okay so i live in california and i am 17 years old. i am turning 18 in 4 months but i was wondering if i could get my permit so i could get practice driving on my own but i dont know if i have to wait 6 months to complete my hours or can i just take my drivers license when i turn 18??
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