我用python计算出如果每7秒出生一个孩子5年内会有多少个孩子出生。问题在我的最后一行。我如何得到一个变量的工作时，我打印文本的任何一方?
这是我的代码:
currentPop = 312032486
oneYear = 365
hours = 24
minutes = 60
seconds = 60
# seconds in a single day
secondsInDay = hours * minutes * seconds
# seconds in a year
secondsInYear = secondsInDay * oneYear
fiveYears = secondsInYear * 5
#Seconds in 5 years
print fiveYears
# fiveYears in seconds, divided by 7 seconds
births = fiveYears // 7
print "If there was a birth every 7 seconds, there would be: " births "births"
当前回答
Python是一种非常通用的语言。你可以用不同的方法打印变量。我列出了以下五种方法。您可以根据自己的方便使用它们。
例子:
a = 1
b = 'ball'
方法1:
print('I have %d %s' % (a, b))
方法2:
print('I have', a, b)
方法3:
print('I have {} {}'.format(a, b))
方法4:
print('I have ' + str(a) + ' ' + b)
方法5:
print(f'I have {a} {b}')
输出将是:
I have 1 ball
其他回答
你可以使用格式化字符串:
print "There are %d births" % (births,)
或者在这个简单的例子中:
print "There are ", births, "births"
如果你在字符串和变量之间使用逗号，就像这样:
print "If there was a birth every 7 seconds, there would be: ", births, "births"
PYTHON 3
最好使用格式选项
user_name=input("Enter your name : )
points = 10
print ("Hello, {} your point is {} : ".format(user_name,points)
或将输入声明为字符串并使用
user_name=str(input("Enter your name : ))
points = 10
print("Hello, "+user_name+" your point is " +str(points))
略有不同:使用Python 3并在同一行中打印几个变量:
print("~~Create new DB:",argv[5],"; with user:",argv[3],"; and Password:",argv[4]," ~~")
使用字符串格式
print("If there was a birth every 7 seconds, there would be: {} births".format(births))
# Will replace "{}" with births
如果你做一个玩具项目，使用:
print('If there was a birth every 7 seconds, there would be:' births'births)
or
print('If there was a birth every 7 seconds, there would be: %d births' %(births))
# Will replace %d with births
