List comprehensionx = [1,2,3,4]ls = []for item in x: out.append(item**2)print(out)>> [1,4,9,16][item**2 for item in x]>> [1,4,9,16] lambda expressionsls = [1,2,3,4,5]list(filter(lambda item: item%2 == 0, ls))>> [2,4] Mathodss = 'Hello professor's.lower() # 전체 소문자화>> 'hello professor's.upper() # 전체 대문자화>> 'HELLO PROFESSOR's.split()>> ['Hello','professor']p = "Let's go!"p.split("'") # 따옴표 안..