python2精確除法

python2和python3除法的最大區別:

python2:

print 500/1000

python2結果:取整數部分,小數並無保留

0

Process finished with exit code 0

 

python3:

print 500/1000

python3結果:獲得真實結果,小數保留

0.5

Process finished with exit code 0

 

那麼,若是python2想保留小數部分,要怎麼作呢?

只須要增長一個導入包.就能夠了.並不須要其它操做

from __future__ import division #用於/相除的時候,保留真實結果.小數

 

增長導入包後的,python2操做:

#coding:utf-8
from __future__ import division

print 500/1000

結果:

0.5

Process finished with exit code 0

 

還有另外一種方式.將除數或被除數兩個其它至少一個轉換成float型:

print float(500)/1000

結果:

0.5

Process finished with exit code 0

 

 

 

 

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Afrikaans Albanian Arabic Armenian Azerbaijani Basque Belarusian Bengali Bosnian Bulgarian Catalan Cebuano Chichewa Chinese (Simplified) Chinese (Traditional) Croatian Czech Danish Dutch English Esperanto Estonian Filipino Finnish French Galician Georgian German Greek Gujarati Haitian Creole Hausa Hebrew Hindi Hmong Hungarian Icelandic Igbo Indonesian Irish Italian Japanese Javanese Kannada Kazakh Khmer Korean Lao Latin Latvian Lithuanian Macedonian Malagasy Malay Malayalam Maltese Maori Marathi Mongolian Myanmar (Burmese) Nepali Norwegian Persian Polish Portuguese Punjabi Romanian Russian Serbian Sesotho Sinhala Slovak Slovenian Somali Spanish Sundanese Swahili Swedish Tajik Tamil Telugu Thai Turkish Ukrainian Urdu Uzbek Vietnamese Welsh Yiddish Yoruba Zulu

 

 

 

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