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Commit47a213b

Browse files
Corey SchaferCorey Schafer
Corey Schafer
authored and
Corey Schafer
committed
Added Python code snippets
1 parentdf2e19b commit47a213b

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34 files changed

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34 files changed

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‎.gitignore

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.DS_Store
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# Video Scripts
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s.txt
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script.txt
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classEmployee:
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"""A sample Employee class"""
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def__init__(self,first,last):
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self.first=first
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self.last=last
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print('Created Employee: {} - {}'.format(self.fullname,self.email))
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@property
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defemail(self):
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return'{}.{}@email.com'.format(self.first,self.last)
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@property
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deffullname(self):
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return'{} {}'.format(self.first,self.last)
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emp_1=Employee('John','Smith')

‎Automation/rename.py

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importos
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os.chdir('/path/to/files/')
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# Am I in the correct directory?
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# print(os.getcwd())
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# print(dir(os))
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# Print all the current file names
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forfinos.listdir():
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# If .DS_Store file is created, ignore it
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iff=='.DS_Store':
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continue
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file_name,file_ext=os.path.splitext(f)
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# print(file_name)
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# One way to do this
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f_title,f_course,f_number=file_name.split('-')
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# print('{}-{}-{}{}'.format(f_number, f_course, f_title, file_ext))
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# Need to remove whitespace
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f_title=f_title.strip()
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f_course=f_course.strip()
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# f_number = f_number.strip()
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# Want to remove the number sign?
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# f_number = f_number.strip()[1:]
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# One thing I noticed about this output is that if it was sorted by filename
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# then the 1 and 10 would be next to each other. How do we fix this? One way we can fix this is to pad
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# the numbers. So instead of 1, we'll make it 01. If we had hundreds of files then this would maybe need to be 001.
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# We can do this in Python with zfill
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f_number=f_number.strip()[1:].zfill(2)
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# print('{}-{}-{}{}'.format(f_number, f_course, f_title, file_ext))
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# You have the power to reformat in any way you see fit
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print('{}-{}{}'.format(f_number,f_title.strip(),file_ext.strip()))
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new_name='{}-{}{}'.format(file_num,file_title,file_ext)
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os.rename(fn,new_name)
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# print(len(os.listdir()))

‎Closures/closure.js

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functionhtml_tag(tag){
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functionwrap_text(msg){
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console.log('<'+tag+'>'+msg+'</'+tag+'>')
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}
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returnwrap_text
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}
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print_h1=html_tag('h1')
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print_h1('Test Headline!')
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print_h1('Another Headline!')
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print_p=html_tag('p')
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print_p('Test Paragraph!')

‎Closures/closure.py

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# Closures
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importlogging
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logging.basicConfig(filename='example.log',level=logging.INFO)
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deflogger(func):
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deflog_func(*args):
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logging.info(
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'Running "{}" with arguments {}'.format(func.__name__,args))
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print(func(*args))
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returnlog_func
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defadd(x,y):
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returnx+y
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defsub(x,y):
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returnx-y
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add_logger=logger(add)
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sub_logger=logger(sub)
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add_logger(3,3)
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add_logger(4,5)
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sub_logger(10,5)
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sub_logger(20,10)

‎Closures/example.log

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INFO:root:Running "add" with arguments (3, 3)
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INFO:root:Running "add" with arguments (4, 5)
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INFO:root:Running "sub" with arguments (10, 5)
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INFO:root:Running "sub" with arguments (20, 10)

‎Datetime/dates.py

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importdatetime
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importpytz
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# Naive
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# d = datetime.date(2001, 9, 11)
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tday=datetime.date.today()
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# weekday() - Monday is 0 and Sunday is 6
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# print(tday)
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# isoweekday() - Monday is 1 and Sunday is 7
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# print(tday)
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# datetime.timedelta(days=0, seconds=0, microseconds=0, milliseconds=0, minutes=0, hours=0, weeks=0)
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tdelta=datetime.timedelta(hours=12)
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# print(tday + tdelta)
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# date2 = date1 + timedelta
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# timedelta = date1 + date2
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bday=datetime.date(2016,9,24)
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till_bday=bday-tday
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# print(till_bday.days)
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t=datetime.time(9,30,45,100000)
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# dt = datetime.datetime.today()
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# dtnow = datetime.datetime.now()
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# print(dir(datetime.datetime))
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# print(dt)
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# print(dtnow)
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dt=datetime.datetime(2016,7,24,12,30,45,tzinfo=pytz.UTC)
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# print(dir(dt))
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dt_utcnow=datetime.datetime.now(tz=pytz.UTC)
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# print(dt_utcnow)
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dt_utcnow2=datetime.datetime.utcnow().replace(tzinfo=pytz.UTC)
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# print(dt_utcnow2)
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# dt_mtn = dt_utcnow.astimezone(pytz.timezone('US/Mountain'))
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# print(dt_mtn)
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dt_mtn=datetime.datetime.now()
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mtn_tz=pytz.timezone('US/Mountain')
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dt_mtn=mtn_tz.localize(dt_mtn)
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# print(dt_mtn)
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dt_east=dt_mtn.astimezone(pytz.timezone('US/Eastern'))
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# print(dt_east)
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print(dt_mtn.strftime('%B %d, %Y'))
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dt_str='July 24, 2016'
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dt=datetime.datetime.strptime(dt_str,'%B %d, %Y')
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print(dt)
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# strftime - Datetime to String
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# strptime - String to Datetime

‎Decorators/decorators.py

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# Decorators
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fromfunctoolsimportwraps
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defmy_logger(orig_func):
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importlogging
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logging.basicConfig(filename='{}.log'.format(orig_func.__name__),level=logging.INFO)
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@wraps(orig_func)
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defwrapper(*args,**kwargs):
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logging.info(
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'Ran with args: {}, and kwargs: {}'.format(args,kwargs))
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returnorig_func(*args,**kwargs)
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returnwrapper
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defmy_timer(orig_func):
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importtime
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@wraps(orig_func)
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defwrapper(*args,**kwargs):
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t1=time.time()
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result=orig_func(*args,**kwargs)
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t2=time.time()-t1
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print('{} ran in: {} sec'.format(orig_func.__name__,t2))
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returnresult
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returnwrapper
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importtime
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@my_logger
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@my_timer
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defdisplay_info(name,age):
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time.sleep(1)
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print('display_info ran with arguments ({}, {})'.format(name,age))
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display_info('Tom',22)

‎Decorators/snippets.txt

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class decorator_class(object):
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def __init__(self, original_function):
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self.original_function = original_function
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def __call__(self, *args, **kwargs):
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print('call method before {}'.format(self.original_function.__name__))
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self.original_function(*args, **kwargs)
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# Practical Examples
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def my_logger(orig_func):
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import logging
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logging.basicConfig(filename='{}.log'.format(orig_func.__name__), level=logging.INFO)
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def wrapper(*args, **kwargs):
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logging.info(
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'Ran with args: {}, and kwargs: {}'.format(args, kwargs))
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return orig_func(*args, **kwargs)
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return wrapper
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def my_timer(orig_func):
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import time
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def wrapper(*args, **kwargs):
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t1 = time.time()
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result = orig_func(*args, **kwargs)
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t2 = time.time() - t1
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print('{} ran in: {} sec'.format(orig_func.__name__, t2))
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return result
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return wrapper
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import time

‎EAFP/eafp.py

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# Duck Typing and Easier to ask forgiveness than permission (EAFP)
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classDuck:
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defquack(self):
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print('Quack, quack')
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deffly(self):
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print('Flap, Flap!')
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classPerson:
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defquack(self):
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print("I'm Quacking Like a Duck!")
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deffly(self):
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print("I'm Flapping my Arms!")
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defquack_and_fly(thing):
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pass
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# Not Duck-Typed (Non-Pythonic)
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# if isinstance(thing, Duck):
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# thing.quack()
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# thing.fly()
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# else:
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# print('This has to be a Duck!')
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# LBYL (Non-Pythonic)
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# if hasattr(thing, 'quack'):
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# if callable(thing.quack):
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# thing.quack()
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# if hasattr(thing, 'fly'):
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# if callable(thing.fly):
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# thing.fly()
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# try:
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# thing.quack()
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# thing.fly()
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# thing.bark()
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# except AttributeError as e:
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# print(e)
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d=Duck()
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print(type(dir(d)))

‎Ex-Machina/ex-machina.py

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#BlueBook code decryption
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importsys
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defsieve(n):
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x= [1]*n
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x[1]=0
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foriinrange(2,n/2):
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j=2*i
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whilej<n:
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x[j]=0
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j=j+i
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returnx
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defprime(n,x):
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i=1
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j=1
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whilej<=n:
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ifx[i]==1:
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j=j+1
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i=i+1
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returni-1
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x=sieve(10000)
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code= [1206,301,384,5]
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key=[1,1,2,2,]
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sys.stdout.write("".join(chr(i)foriin [73,83,66,78,32,61,32]))
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foriinrange (0,4):
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sys.stdout.write(str(prime(code[i],x)-key[i]))
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print

‎Exceptions/currupt_file.txt

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Currupt File!

‎Exceptions/exceptions.py

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try:
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f=open('curruptfile.txt')
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# if f.name == 'currupt_file.txt':
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# raise Exception
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exceptIOErrorase:
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print('First!')
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exceptExceptionase:
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print('Second')
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else:
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print(f.read())
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f.close()
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finally:
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print("Executing Finally...")
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print('End of program')

‎Exceptions/test_file.txt

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Test File Contents!

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