python條件語句多條件
阿新 • • 發佈：2021-01-12
使用Python進行測試的條件語句與我們編寫的其他程式語言相似,在採取任何決定之前，if和else語句將根據某些條件獲得所需的結果。
如何在Python示例中使用條件語句，我們使用的是Mint作業系統，該作業系統的Python版本為2.7.6，Python版本為3.4.0，但條件語句不依賴於作業系統，因此我們可以使用任何OS。此條件語句也適用於早期的Python版本。
Using username "sloba". sloba@***.***.*.*'s password: Welcome to Linux Mint 17.2 Rafaela (GNU/Linux 3.16.0-38-generic x86_64) Welcome to Linux Mint * Documentation: http://www.linuxmint.com Last login: Sun Oct 11 18:25:32 2015 from ***.***.*.* sloba@sloba-VirtualBox ~ $ loba@sloba-VirtualBox ~ $ python2.7 Python 2.7.6 (default, Mar 22 2014, 22:59:56) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> sloba@sloba-VirtualBox ~ $ python3 Python 3.4.0 (default, Apr 11 2014, 13:05:11) [GCC 4.8.2] on linux Type "help", "copyright", "credits" or "license" for more information. >>>
Python 2.7.6 (default, Mar 22 2014, 22:59:56) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> a =2 >>> b =5 >>>
sloba@sloba-VirtualBox ~/Desktop/myscripts $ python Python 2.7.6 (default, Mar 22 2014, 22:59:56) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> a =2 >>> b =5 >>> >>> a,b = 2,5 >>> >>> print a 2 >>> print b 5 >>>
>>> >>> if a < b: ... print a, " is cannot be more than ",b ... 2 is cannot be more than 5 >>>
if語句以另一個if結束，就像我們在其他程式語言中所做的那樣，因此，只寫了以下幾行，並且在三個點後使用TAB表示我的右縮排。按Enter鍵檢查條件語句中的操作符少於 ：
>>> if a < b: ... print a, " is cannot be more than ",b ...
>>> if a>b: ... print a," is greater than ",b ... >>>
>>> if a>b: ... print a," is greater than ",b ... else: ... print a," is not greater than ",b ... 2 is not greater than 5 >>>
if和else語句使用運算子。
為了建立條件語句，我將使用一個數學遊戲來僅使用條件語句。要計算單利，我們需要知道本金，這是我們將要使用的起始金額，該金額的利率和時間。要計算的公式是i = prt。
我的意思是賺取利息
- P表示本金
- R是利率
- T是時間
Sloba賺取的利息為1,600盧比，包括本金在內的總金額為41,600.00。讓我們在名為“ simple_interest.py”的指令碼中進行設定。
#!/usr/bin/python
#Author: Swadhin
# Date: 11 - Oct - 2015
# Purpose: Simple interest game in Python
print "--------------Simple interest game--------------"
print "------------------------------------------------"
#Below are the variables used to calculate the formula
principle = 40000
# rate 4 % taken as per the question
rate = 4
# time in year
time = 1
name = raw_input("What is your name:")
print "Welcome ", name
print "Here is the question: "
print "Say Sloba has 40,000 in rupees in his savings account where he has earned interest of 4% annually which is not compounded."
answer = input("So the question would be how much he will save in 1 years. ")
si = (principle * rate * time) / 100
if answer == si:
print name, "you have given the correct answer, the total saving Sloba would save in rupees is 40000 plus 1600 i.e.41,600 in one year "
else :
print name, "your answer is not correct"
sloba@sloba-VirtualBox ~/Desktop/myscripts $ ls simple_interest.py sloba@sloba-VirtualBox ~/Desktop/myscripts $ python simple_interest.py --------------Simple interest game-------------- ------------------------------------------------ What is your name: Ray Welcome Ray Here is the question: Say Sloba has 40,000 in rupees in his savings account where he has earned interest of 4% annually which is not compounded. So the question would be how much he will save in 1 years. 1400 Ray your answer is not correct sloba@sloba-VirtualBox ~/Desktop/myscripts $
sloba@sloba-VirtualBox ~/Desktop/myscripts $ python simple_interest.py --------------Simple interest game-------------- ------------------------------------------------ What is your name: Ray Welcome Ray Here is the question: Say Sloba has 40,000 in rupees in his savings account where he has earned interest of 4% annually which is not compounded. So the question would be how much he will save in 1 years. 1600 Ray you have given the correct answer, the total saving Sloba would save in rupees is 40000 plus 1600 i.e.41,600 in one year sloba@sloba-VirtualBox ~/Desktop/myscripts $
最後的指令碼：
#!/usr/bin/python
#Author: Swadhin
# Date: 11 - Oct - 2015
# Purpose: Simple interest game in Python
print "--------------Simple interest game--------------"
print "------------------------------------------------"
#Below are the variables used to calculate the formula
principle = 40000
#rate 4 % taken as per the question
rate = 4
# time in year
time = 1
name = raw_input("What is your name:")
print "Welcome ", name
print "Here is the question: "
print "Say Sloba has 40,000 in rupees in his savings account where he has earned interest of 4% annually which is not compounded."
answer = input("So the question would be how much he will save in 1 years. ")
si = (principle * rate * time) / 100
if answer == si:
print name, "you have given the correct answer, the total saving Sloba would save in rupees is 40000 plus 1600 i.e.41,600 in one year "
elif answer >=1500 and answer <=1599:
print name, "your answer is very close, so try again"
elif answer >1600:
print name, "you have exceeded the actual value of the correct answer, so try again"
else :
print name, "your answer is not correct"
現在，讓我們繼續測試Python中的條件語句。下面的測試顯示了我們如何使用python中的if和else語句來實現其他邏輯。
sloba@sloba-VirtualBox ~/Desktop/myscripts $ clear sloba@sloba-VirtualBox ~/Desktop/myscripts $ python simple_interest.py --------------Simple interest game-------------- ------------------------------------------------ What is your name: Ray Welcome Ray Here is the question: Say Sloba has 40,000 in rupees in his savings account where he has earned intere st of 4% annually which is not compounded. So the question would be how much he will save in 1 years. 500 Ray your answer is not correct sloba@sloba-VirtualBox ~/Desktop/myscripts $ python simple_interest.py --------------Simple interest game-------------- ------------------------------------------------ What is your name: Ray Welcome Ray Here is the question: Say Sloba has 40,000 in rupees in his savings account where he has earned intere st of 4% annually which is not compounded. So the question would be how much he will save in 1 years. 1599 Ray your answer is very close, so try again sloba@sloba-VirtualBox ~/Desktop/myscripts $ python simple_interest.py --------------Simple interest game-------------- ------------------------------------------------ What is your name: Ray Welcome Ray Here is the question: Say Sloba has 40,000 in rupees in his savings account where he has earned intere st of 4% annually which is not compounded. So the question would be how much he will save in 1 years. 1650 Ray you have exceeded the actual value of the correct answer, so try again sloba@sloba-VirtualBox ~/Desktop/myscripts $ python simple_interest.py --------------Simple interest game-------------- ------------------------------------------------ What is your name: Ray Welcome Ray Here is the question: Say Sloba has 40,000 in rupees in his savings account where he has earned interest of 4% annually which is not compounded. So the question would be how much he will save in 1 years. 1600 Ray you have given the correct answer, the total saving Sloba would save in rupees is 40000 plus 1600 i.e.41,600 in one year sloba@sloba-VirtualBox ~/Desktop/myscripts $