Python类型错误：尝试打印字符串和整数时出错

Question

现在，我正在制作一个程序，以查找在向一组人进行演示时必须购买多少纸张。您必须打印演示文稿的副本。当我去运行程序，它自带了：

Traceback (most recent call last): 
File "C:/Users/Shepard/Desktop/Assignment 5.py", line 11, in <module> 
print ("Total Sheets: " & total_Sheets & " sheets") 
TypeError: unsupported operand type(s) for &: 'str' and 'int' 
>>> 

我试图做的是：

print ("Total Sheets: " & total_Sheets & " sheets") 
print ("Total Reams: " & total_Reams & " reams") 

如果我不使用&操作字符串和整数结合来打印类型？如果不是，我做错了什么？

这是我的整个程序。

ream = 500 
report_Input = int (input ("How many pages long is the report?")) 
people_Input = int (input ("How many people do you need to print for? -Automatically prints five extras-")) 


people = people_Input + 5 

total_Sheets = report_Input * people 
total_Reams =((total_Sheets % 500) - total_Sheets)/people 

print ("Total Sheets: " & total_Sheets & " sheets") 
print ("Total Reams: " & total_Reams & " reams") 

编辑：我张贴了这个之后，我发现，乔恩·克莱门茨的回答是最好的答案，而且我还发现，我需要把在if语句，使其工作。这是我完成的代码，感谢所有帮助。

ream = 500 
report_Input = int (input ("How many pages long is the report?")) 
people_Input = int (input ("How many people do you need to print for? -Automatically prints five extras-")) 


people = people_Input + 5 

total_Sheets = report_Input * people 
if total_Sheets % 500 > 0: 
    total_Reams =(((total_Sheets - abs(total_Sheets % 500)))/ream)+1 
else: 
    total_reams = total_Sheets/ream 


print ("Total Sheets:", total_Sheets, "sheets") 
print ("Total Reams:", total_Reams, "reams") 

Answer 1

首先&不是concatanation操作（这是按位与运算符） - 这是+，但即使没有一个str和int之间的工作......，你可以使用

Python2.x

print 'Total Sheets:', total_Sheets, 'sheets' 

Python 3.x都有

print ('Total Sheets:', total_Sheets, 'sheets') 

或者，你可以使用字符串格式化：

print 'Total Sheets: {0} sheets'.format(total_Sheets) 

（注：从2.7+可以省略位置参数，并且只使用{}如果你想）