upper()字符串中字母由小寫變為大寫
lower()字符串中字母由大寫變為小寫
capitalize()字符串中字母首字母大寫其余小寫
title()字符串中字母每個單詞的首字母大寫其余小寫
舉個列子:
1 a = "hello" 2 b = "WORLD" 3 c = "hello" 4 d = "hello world" 5 a1 = a.upper() 6 b1 = b.lower() 7 c1 = c.capitalize() 8 d1 = d.title() 9 print(a1) 10 print(b1) 11 print(c1) 12 print(d1)
輸出結果:
HELLO
world
Hello
Hello World
實際運用就如上面代碼書寫。