Python打印()函数

Pythonprint（）函数顾名思义用于打印在Python Python对象（一个或多个）作为标准输出。

Syntax: print(object(s), sep, end, file, flush)

Parameters:

• Object(s): It can be any python object(s) like string, list, tuple, etc. But before printing all objects get converted into strings.
• sep: It is an optional parameter used to define the separation among different objects to be printed. By default an empty string(“”) is used as a separator.
• end: It is an optional parameter used to set the string that is to be printed at the end. The default value for this is set as line feed(“\n”).
• file: It is an optional parameter used when writing on or over a file. By default,, it is set to produce standard output as part of sys.stdout.
• flush: It is an optional boolean parameter to set either a flushed or buffered output. If set True, it takes flushed else it takes buffered. By default, it is set to False.

示例 1：打印Python对象

Python3

# sample python objetcs
list = [1,2,3]
tuple = ("A","B")
string = "Geeksforgeeks"
 
# printing the objects
print(list,tuple,string)

输出：

[1, 2, 3] ('A', 'B') Geeksforgeeks

示例 2：使用分隔符打印对象

蟒蛇3

# sample python objetcs
list = [1,2,3]
tuple = ("A","B")
string = "Geeksforgeeks"
 
# printing the objects
print(list,tuple,string, sep="<<..>>")

输出：

[1, 2, 3]<<..>>('A', 'B')<<..>>Geeksforgeeks

示例 3：指定要在末尾打印的字符串

蟒蛇3

# sample python objetcs
list = [1,2,3]
tuple = ("A","B")
string = "Geeksforgeeks"
 
# printing the objects
print(list,tuple,string, end="<<..>>")

输出：

[1, 2, 3] ('A', 'B') Geeksforgeeks<<..>>

示例 4：打印和读取外部文件的内容

为此，我们还将使用Python open()函数，然后打印其内容。我们已经在系统中保存了以下名为geeksforgeeks.txt 的文本文件。

要阅读和打印此内容，我们将使用以下代码：

蟒蛇3

# open and read the file
 my_file = open("geeksforgeeks.txt","r")
   
# print the contentts of the file
print(my_file.read())

输出：

示例 5：打印到 sys.stderr

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# Python code for printing to stderr
 
# importing the package
# for sys.stderr
import sys
 
# variables
Company = "Geeksofrgeeks.org"
Location = "Noida"
Email = "[e-mail]"
 
# print to stderr
print(Company, Location, Email, file=sys.stderr)

输出：

Geeksofrgeeks.org Noida [e-mail]