[問題] 比對字串中的母音有幾種

[tnzikom (tnzikom)]

目前寫了判斷母音的code如下

word = input()
count = 0
a = e = i = o = u = 0
for num in word.lower():
  if num in 'a':
    a = 1
  elif num in 'e':
    e = 1
  elif num in 'i':
    i = 1
  elif num in 'o':
    o = 1
  elif num in 'u':
    u = 1
count = a + e + i + o + u
print(count)

自己覺得這code看起來很笨......想問是不是有更好的寫法，
另外也想問for num in word.lower()這行for的運作是怎麼樣呢？
知道word.lower()是變小寫的意思，
但num in word.lower()的意思看了很久還是不太能理解> <

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※ 編輯: tnzikom (140.112.25.99), 11/03/2017 17:09:11
推 Django: for num in word.lower(): if num in 'aeiou': count += 1
→ Django: (請自行排版) 另外你本來的寫法是錯的,aeiou的值沒有累加
抱歉我打錯了!!!是要問有幾種母音
推 johnlinvc: import re
→ johnlinvc: count=len(re.findall("[AEIOU]", word,re.I))
※ 編輯: tnzikom (140.112.25.99), 11/03/2017 18:29:08
→ NTUGG: str.count(....)
推 Yshuan: [ch in word.lower() for ch in 'aeiou'].count(True)
→ Yshuan: num in word.lower() #小寫的word是否有num變數代表的字母
→ bibo9901: len( set("aeiou") & set(word) )
→ goldflower: word='ptT is Back'  for num in word作用如同
→ goldflower: for num in ['p','t','t',' ','i','s',' ',......]
→ lance8537: 感覺好leetcode