如何在Python的同一行上打印变量和字符串？

Question

我正在使用python算出如果一个孩子每7秒出生一次，那么5年内将有多少个孩子出生。问题出在我的最后一行。当我在文本的任何一侧打印文本时，如何使它工作？

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"

Answer 1

使用,分隔字符串和变量，同时打印：print("If there was a birth every 7 seconds, there would be: ", births, "births"), in print功能将项目分隔为一个空格：>>> print("foo", "bar", "spam")foo bar spam或更好地使用字符串格式：print("If there was a birth every 7 seconds, there would be: {} births".format(births))字符串格式化功能更强大，它还允许您执行其他操作，例如填充，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

Answer 2

Python是一种非常通用的语言。您可以通过不同的方法打印变量。我列出了以下五种方法。您可以根据需要使用它们。例子：a = 1b = '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}')输出为：I have 1 ball

Answer 3

还有两个第一个>>> births = str(5)>>> print("there are " + births + " births.")there are 5 births.添加字符串时，它们会串联在一起。第二个同样format，字符串的（Python 2.6和更高版本）方法可能是标准方法：>>> births = str(5)>>>>>> print("there are {} births.".format(births))there are 5 births.此format方法也可以与列表一起使用>>> format_list = ['five', 'three']>>> # * unpacks the list:>>> print("there are {} births and {} deaths".format(*format_list))  there are five births and three deaths或字典>>> format_dictionary = {'births': 'five', 'deaths': 'three'}>>> # ** unpacks the dictionary>>> print("there are {births} births, and {deaths} deaths".format(**format_dictionary))there are five births, and three deaths