Question

I could see a space popping up by default if I use '\n' in python 3x. Could someone please help me in removing it?

Appreciate your help in advance!

sample code:

a='How are you?'
print("Hello, World.\n",a)

Output

Hello, World.
 How are you?

Explanation

The second line of the output starts with a space. Why is this happening?

Answer 1

By consulting the documentation: https://docs.python.org/3.0/whatsnew/3.0.html#print-is-a-function

You can see that in Python3 the print function uses a space separator to print the arguments passed to it.

To change this behavior you can use print as:

print("Hello, World.\n", a, sep="")

Answer 2

The comma adds in the space. There is a difference in-between:

print(a, b)

and

print(a+b)

Cheers, Sebastian

Answer 3

printseparates its arguments by spaces. You may use two prints and omit the explicit newline \n:

print("Hello, World.")
print(a)

or you concatenate the strings:

print("Hello, World.\n" + a)

or you use a format

print("Hello, World.\n%s" % a)

Answer 4

Comma is creating space replce it as

a='How are you?'
print("Hello, World.\n"+a)

Answer 5

The comma is causing the space. Use the + sign to concatenate like this:

a='How are you?'
print("Hello, World.\n" + a)

outputs:

Hello, World.
How are you?

Answer 6

As stated in the Python3 documentation, the print() function does as follows:

Print objects to the text stream file, separated by sep and followed by end. sep, >end, file and flush, if present, must be given as keyword arguments.

Therefore, there's a number of ways to solve your issue:
1. Use the sep keyword argument, removing the default space separator.

a='How are you?'
print("Hello, World.\n", a, sep='')

2. Use the .format() function.

a='How are you?'
print("Hello, World.\n{}".format(a))

3. Use two print statements.

a='How are you?'
print("Hello, World.")
print(a)

All of these options will output:

Hello, World.
How are you?

Although all three are valid implementations, I'd personally choose option two as I feel it's a cleaner and more logical solution.

Hope this helps!

Answer 7

您在变量之间使用逗号分隔符。（"string1","string2"）默认情况下有空格分隔符。建议的方法是：

使用sep：print("Hello, World.\n", a, sep="")
使用+代替,：print("Hello, World.\n" + a)

End line '\n' issue in python

7 个答案: