Simple Python Code Question

Shell Programming and Scripting
1

I have the following code:

#!/usr/bin/env python

mylist = [ "hello", "you", "are", "so", "cool" ]

def printWithoutNewlines():
    for objects in mylist:
        #print(objects)
        objects = objects.replace('hello', "hi")
        print objects

When executed, it gives the following output:

## ./loop.py 
hi
you
are
so
cool

But i want it to print the output all in one line. I want to be able to decide on whether i allow it to print the items on a new line, or to print them all on one line.

In order words, the desired output should be:

## ./loop.py 
hi you are so cool

how can my code be modified to do this?

OS: Linux/Unix

2

Hi skysmart...

I have no idea what you are trying to do but your function is not called.
I guess you are trying to put that function in the interpreter namespace for other uses.

The function has a useless line and looks as though you want Python version 2.x.x and the print STATEMENT.
If you require version 3.x.x then you need the print FUNCTION and the end=" " _flag_.

#!/usr/bin/python2.7
mylist = [ "hello", "you", "are", "so", "cool" ]

def printWithoutNewlines():
    for objects in mylist:
        objects = objects.replace('hello', "hi")
        # Note the comma below.
        print objects ,

printWithoutNewlines()

OSX 10.13.4, default bash terminal calling python2.7.

Last login: Sun May 27 10:36:33 on ttys000
AMIGA:barrywalker~> cd Desktop/Code/Python
AMIGA:barrywalker~/Desktop/Code/Python> chmod 755 loop.py
AMIGA:barrywalker~/Desktop/Code/Python> ./loop.py
hi you are so cool
AMIGA:barrywalker~/Desktop/Code/Python> _
1 Like
3

thank you. i intended to put the following in my original code:

printWithoutNewlines()

but it looks like its not part of what i copied and pasted.

another problem im having is, before and after implementing your suggested change, i have been unable to put the output of the called function into a variable.

My original code:

#!/usr/bin/python2.7
mylist = [ "hello", "you", "are", "so", "cool" ]

def printWithoutNewlines():
    for objects in mylist:
        objects = objects.replace('hello', "hi")
        print objects

functionsOutput = printWithoutNewlines()

when I run the script, even though Im not printing out the output of "functionOutput", i still see the output.

how can i keep the results of the printWithoutNewlines function in the "functionOutput" variable without it being outputted out to the screen?

and how can I do a replacement on the content of the functionOutput variable?

here is what i have tried:

# note that im removed the comma you recommended. i did that on purpose.

#!/usr/bin/python2.7
mylist = [ "hello", "you", "are", "so", "cool" ]

def printWithoutNewlines():
    for objects in mylist:
        objects = objects.replace('hello', "hi")
        print objects

functionsOutput = printWithoutNewlines()
functionsOutput.replace('\n', ' ')

what I'm intending to do with the above code is to run the defined function, then, remove the new lines from the output of the function.

When I run the above code, I get this error:

hi
you
are
so
cool
Traceback (most recent call last):
  File "./vego.py", line 10, in <module>
    functionsOutput.replace('\n', ' ')
AttributeError: 'NoneType' object has no attribute 'replace'
4

Again I have no idea why so convoluted a method as your function:
DEMO:

#!/usr/bin/python2.7

mylist = [ "hello", "you", "are", "so", "cool" ]

STRING = ' '.join(mylist)
NEWSTRING = STRING.replace('hello', "hi")
print STRING
print NEWSTRING
print

# This function should work on ANY version of Python from at least 1.4.
def printWithoutNewlines():
    mystring = ""
    for objects in mylist:
        objects = objects.replace('hello', "hi")
        mystring = mystring + objects + " "
    return(mystring)

print printWithoutNewlines()

functionsOutput_sp = printWithoutNewlines()

print functionsOutput_sp

functionsOutput_nl = functionsOutput_sp.replace(' ', '\n')

print functionsOutput_nl ,

Results, same machine as before.

Last login: Mon May 28 14:14:06 on ttys000
AMIGA:barrywalker~> cd ~/Desktop/Code/Python
AMIGA:barrywalker~/Desktop/Code/Python> python
Python 2.7.10 (default, Oct  6 2017, 22:29:07) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> dir()
['__builtins__', '__doc__', '__name__', '__package__']
>>> execfile("loop.py")
hello you are so cool
hi you are so cool

hi you are so cool 
hi you are so cool 
hi
you
are
so
cool
>>> dir()
['NEWSTRING', 'STRING', '__builtins__', '__doc__', '__name__', '__package__', 'functionsOutput_nl', 'functionsOutput_sp', 'mylist', 'printWithoutNewlines']
>>> exit()
AMIGA:barrywalker~/Desktop/Code/Python> _