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
你可以使用f-string或.format()方法
使用f-string
print(f'If there was a birth every 7 seconds, there would be: {births} births')
使用.format ()
print("If there was a birth every 7 seconds, there would be: {births} births".format(births=births))
其他回答
如果你使用的是python 3.6或最新版本， f弦是最好的，也是最简单的
print(f"{your_varaible_name}")
在打印时使用，分隔字符串和变量:
print("If there was a birth every 7 seconds, there would be: ", births, "births")
，打印功能用一个空格分隔项目:
>>> print("foo", "bar", "spam")
foo bar spam
或者更好的使用字符串格式:
print("If there was a birth every 7 seconds, there would be: {} births".format(births))
字符串格式是更强大的，并允许你做一些其他的事情，如填充，填充，对齐，宽度，设置精度等。
>>> print("{:d} {:03d} {:>20f}".format(1, 2, 1.1))
1 002 1.100000
^^^
0's padded to 2
演示:
>>> births = 4
>>> print("If there was a birth every 7 seconds, there would be: ", births, "births")
If there was a birth every 7 seconds, there would be: 4 births
# formatting
>>> print("If there was a birth every 7 seconds, there would be: {} births".format(births))
If there was a birth every 7 seconds, there would be: 4 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))
如果你想使用python 3，这很简单:
print("If there was a birth every 7 second, there would be %d births." % (births))
在当前的python版本中，您必须使用括号，如下所示:
print ("If there was a birth every 7 seconds", X)
