現有plain text titled test.txt,統計其中的單詞出現的個數。python
test.txt的內容:shell
i have have application someday oneday day demoapp
i have some one coma ideal naive iide
用python實現的代碼:idea
import reget
count = {}it
f = open('test','r') io
b = f.read()class
#print btest
cd = re.split('[ \\n]+',b) #注意split的用法
print cd
for i in cd:
count[i] = count.get(i,0) + 1#注意get()方法的用法
print count
執行代碼後獲得的結果:
['i', 'have', 'have', 'application', 'someday', 'oneday', 'day', 'demo', 'i', 'have', 'some', 'one', 'coma', 'ideal', 'naive', 'i']
{'someday': 1, 'i': 3, 'demo': 1, 'naive': 1, 'some': 1, 'one': 1, 'application': 1, 'ideal': 1, 'have': 3, 'coma': 1, 'oneday': 1, 'day': 1}
shell實現的方法爲:
tr " " "\\n"
運行結果爲
1 application
1 coma
1 day
1 demo
3 have
3 i
1 ideal
1 naive
1 one
1 oneday
1 some
1 someday