This content originally appeared on DEV Community and was authored by Dev Write Ups
A function in Python is a block of coordinated, reusable code that is utilized to play out a solitary, related activity. Functions gives a better seclusion to your application and a serious level of code reusing.
In this post we're going to see 4 Functions that make reading Python code easier.
Globals
>>> gloabals()
{'__name__':'__main__', '__doc__': None, ...}
As it name implies, the globals() fucntion will display information of global scope. For example, if we open a Python console and input globals(), a dict including all names and values of variables in global scope will be returned.
Locals
def top_developer():
name = 'DevWriteUps'
country = 'Canada'
print(locals())
top_developer()
# {'name':'DevWriteUps', 'country': 'Canada'}
After understanding the globals(), locals() funciton is just a piece of cake. As its name implies, it will return a dict including all local names nad values. By the way, if we call the local() in global scope, the result is identical to globals().
Vars
class TopDeveloper:
def __init__(self):
self.name = "DevWriteUps"
self.county = "Canada"
me = TopDeveloper()
print(vars(me))
# {'name':'DevWriteUps', 'country': 'Canada'}
print(vars(me) is me.__dict__)
# true
The vars() function will return the dict, which is a dictionary used to store an object's attributes. Its result is the same as calling the __dict__ directly.
DIR
class TopDeveloper:
def __init__(self):
self.name = "DevWriteUps"
self.county = "Canada"
me = TopDeveloper()
print(dir(me))
# ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'age', 'country', 'name']
The dir() function helps us demonstrate a lis tof names in the corresponding scope. In fact, the dir method calls __dir__() internally.
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This content originally appeared on DEV Community and was authored by Dev Write Ups
