import re  
def change_date_format(dt):  
        return re.sub(r'(\d{4})-(\d{1,2})-(\d{1,2})', '\\3-\\2-\\1', dt)  
dt1 = "2026-01-02"  
print("Original date in YYY-MM-DD Format: ",dt1)  
print("New date in DD-MM-YYYY Format: ",change_date_format(dt1))