What is the difference between these two? (Assigning functions to variables)

[Max Nathaniel Ho]

Example 1

def compose_greet_func():
def get_message():
return Hello there!

return get_message

greet = compose_greet_func()
print greet()


Example 2 

def greet(name):
return hello +name

greet_someone = greet
print greet_someone(John

In Example 1, the function compoe_greet_func is assigned to the variable greet, 
and () is included at the end of the function.

However, in Example 2, the function greet is assigned to the variable 
greet_someone but () is excluded at the end of the function.

Does the () matter when assigning functions to variables? 

Thank you!
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Re: What is the difference between these two? (Assigning functions to variables)

[Max Nathaniel Ho]

Just to be clear, I was referring to these two lines

greet = compose_greet_func() 

greet_someone = greet 

On Wednesday, November 5, 2014 11:15:46 AM UTC+8, Max Nathaniel Ho wrote:
 Example 1
 
 def compose_greet_func():
 def get_message():
 return Hello there!
 
 return get_message
 
 greet = compose_greet_func()
 print greet()
 
 
 Example 2 
 
 def greet(name):
 return hello +name
 
 greet_someone = greet
 print greet_someone(John
 
 In Example 1, the function compoe_greet_func is assigned to the variable 
 greet, and () is included at the end of the function.
 
 However, in Example 2, the function greet is assigned to the variable 
 greet_someone but () is excluded at the end of the function.
 
 Does the () matter when assigning functions to variables? 
 
 Thank you!
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Re: What is the difference between these two? (Assigning functions to variables)

[Cameron Simpson]

On 04Nov2014 19:17, Max Nathaniel Ho maxhow...@gmail.com wrote:

Just to be clear, I was referring to these two lines

greet = compose_greet_func()

greet_someone = greet


Please don't top-post. Thanks.

Your first assignment:

  greet = compose_greet_func()

_calls_ (runs) the compose_greet_func and assigns its return value to greet.

Your second assignment:

  greet_someone = greet

assigns the current value of greet, whatever that is, to greet_someone. No 
function is called.


Cheers,
Cameron Simpson c...@zip.com.au
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Re: What is the difference between these two? (Assigning functions to variables)

[Max Nathaniel Ho]

On Wednesday, November 5, 2014 2:00:08 PM UTC+8, Cameron Simpson wrote:
 On 04Nov2014 19:17, Max Nathaniel Ho maxhow...@gmail.com wrote:
 Just to be clear, I was referring to these two lines
 
 greet = compose_greet_func()
 
 greet_someone = greet
 
 Please don't top-post. Thanks.
 
 Your first assignment:
 
greet = compose_greet_func()
 
 _calls_ (runs) the compose_greet_func and assigns its return value to greet.
 
 Your second assignment:
 
greet_someone = greet
 
 assigns the current value of greet, whatever that is, to greet_someone. 
 No 
 function is called.
 
 Cheers,
 Cameron Simpson c...@zip.com.au

Apologies about the top posting.

Ahh okay, thank you for your explanation
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