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-- Define a function that increment one value
inc x = x + 1

-- Call function
inc 

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# Define TV class, notice class is an object too
class TV(object):
    def __init__(self, size)
        self.size = size
    # This is an instance method and it always bound to specific instance of TV class    
    def get_size(self):
        return self.size
    
# Try to call class method
TV.get_size(TV(40))

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import functools
import inspect

# decorator
def check_role(f):
    # Use this decorator to keep update some attributes of f such as doc string, name ...
    @functools.wraps(f)
    def wrapper(*args, **kwargs):
        # make arguments as a dict, this avoid to check argument which is position or keyword argument
        func_args = inspect.getcallargs(f, *args, **kwargs)

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# define a decorator simplest as possible
def identify(f):
  return f

# Use decorator
def foo():
  return 'fuzz'
# the same as
foo = identify(foo)

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# Send GET request to github api to get OAuth token.
curl --user "<username>" --data '{"scopes": ["gist"], "note": "Demo Oauth token"}' https://api.github.com/authorizations

# Use OAuth token to access resource
curl https://api.github.com/gitsts/starred?access_token=<token_string>
# or use OAuth token on request header
curl --header "Authorization: token <token_string>" https://api.github.com/gists/starred

# List all authorizations
curl --user "<username>" https://api.github.com/authorizations

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# Send POST request with customize header
curl --header "Content-Type: application/json" --header "authToken: <token_string>" --data @file.txt https://api.abc.com/endpoint

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# Send POST request with data to github api to create a gist
curl --user "<username>" --request POST --data '{"description": "Test create a github gists via api", "public": "true", "files": {"test.txt": {"content": "Hello"}}}' https://api.github.com/gists
# or in short
curl -u "<username>" -X POST -d '{"description": "Test create a github gists via api", "public": "true", "files": {"test.txt": {"content": "Hello"}}}' https://api.github.com/gists
# or more short, if supplied -d (data) POST method can ommited as below
curl -u "<username>" -d '{"description": "Test create a github gists via api", "public": "true", "files": {"test.txt": {"content": "Hello"}}}' https://api.github.com/gists

# Send POST request with multiple data
curl --data "login=<username>" --data "token=<token_string>" https://github.com/api/v2/json/user/show/<username>
# or combine into single --data

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# Send GET request to github api to retrieve info of an github user without header
curl https://api.github.com/users/<username>

# Send GET request to github api to retrieve info of an github user with header
curl --include https://api.github.com/users/<username>
# or
curl -i https://api.github.com/users/<username>

# Send GET request with basic auth use user credential to github api to retrieve protected resources
curl --user "<username>:<password>" https://api.github.com/users/<username>

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# zipping: python 3 return a zip object, python 2 return a list of tuples
a = [1, 2, 3]
b = ['a', 'b', 'c']
zipped = zip(a, b) # This result will only live for once used then zipped will become empty

# to print value of zip
# 1 use for loop as a iterator
for x in zipped:
  print(x) # (1, 'a') ...
  

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# list
a = ['Hello', "World", 'Python']
for i, v in enumerate(a):
  print(i, v)
  
# Dictionary
a = {'name': 'Peter', 'age': 25}
for k, v in a.items(): # .iteritems() with python 2
  print(k, v)