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標(biāo)題:
python里的單個下劃線 “_” 有何用處
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作者:
leooys
時間:
2011-06-29 15:57
標(biāo)題:
python里的單個下劃線 “_” 有何用處
import random
articles = ["the", "a", "another", "her", "his"]
subjects = ["cat", "dog", "horse", "man", "woman", "boy", "girl"]
verbs = ["sang", "ran", "jumped", "said", "fought", "swam", "saw",
"heard", "felt", "slept", "hopped", "hoped", "cried",
"laughed", "walked"]
adverbs = ["loudly", "quietly", "quickly", "slowly", "well", "badly",
"rudely", "politely"]
for _ in [1, 2, 3, 4, 5]:
article = random.choice(articles)
subject = random.choice(subjects)
verb = random.choice(verbs)
if random.randint(0, 1) == 0:
print(article, subject, verb)
else:
adverb = random.choice(adverbs)
print(article, subject, verb, adverb)
~
復(fù)制代碼
請教，這個for語句里的下劃線的作用
作者:
flying_away
時間:
2011-06-29 16:51
應(yīng)該是一個變量吧.
作者:
meistudios
時間:
2011-06-30 03:21
一般用作你不關(guān)心其具體值的變量。
作者:
leooys
時間:
2011-06-30 09:24
謝謝,我最初奇怪的是，怎么在循環(huán)體里沒有使用這個變量。明白了。
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