MeryllEssig · January 14, 2017 13:42
diff --git a/python_snippets.py b/python_snippets.py
 food = ["pizza", "tacos", "ice cream", "cupcakes", "burgers"]
 print(', '.join(str(x) for x in food))
 print(*food, sep=", ")

 #output: pizza, tacos, ice cream, cupcakes, burgers

 p = backwards 
 print p[::-1]

 #output: sdrawkcab

 name = "Jon"  
 age = 28  
 fave_food = "burritos"
 fave_color = "green" 

 string = "Hey, I'm {0} and I'm {1} years old. I love {2} and my favorite color is {3}.".format(name, 
 age, fave_food, fave_color)
 print(string)

 #output: Hey, I'm Jon and I'm 28 years old. I love burritos and my favorite color is green.

 x = array([3, 6, 9, 12])
 x/3.0
 print(x)

 #output: array([1, 2, 3, 4])

 y = [3, 6, 9, 12]
 y/3.0
 print(y)

 #output: exception -> arrays are more straightforward than lists for arithmetic operations.

 age = 15
 # Conditions are evaluated from left to right
 print('kid' if age < 18 else 'adult')

 #output: kid

 print(('adult', 'kid')[age < 20])
 #output: kid
 print({True: 'kid', False: 'adult'}[age < 20])
 #output: kid

 import random
 items = ['here', 'are', 'some', 'strings', 'of',
         'which', 'we', 'will', 'select', 'one']
 rand_item = items[random.randrange(len(items))] #one item

 rand_items = [items[random.randrange(len(items))] #multiple items
              for item in range(4)]

 rand_item = random.choice(items) #easier

 rand_items = random.sample(items, n) #multiple items


 os.access('foo.txt', os.R_OK)
 True # This means the file exists AND you can read it.
 os.access('foo.txt', os.W_OK)
 False # You cannot write to the file. It may or may not exist.

 try:
    f = open('foo.txt')
    f.close()
 except IOError as e:
    print('Uh oh!')

 def file_accessible(filepath, mode):
    ''' Check if a file exists and is accessible. '''
    try:
        f = open(filepath, mode)
        f.close()
    except IOError as e:
        return False
    return True


 def lessThan(cutoffVal, *vals) :
    ''' Return a list of values less than the cutoff. '''
    arr = []
    for val in vals :
        if val < cutoffVal:
            arr.append(val)
    return arr
 print(lessThan(10, 2, 17, -3, 42))
 #output: [2, -3]

 def printVals(prefix='', **dict):
    # Print out the extra named parameters and their values
    for key, val in dict.items():
        print('%s [%s] => [%s]' % (prefix, str(key), str(val)))
        

 def formatString(stringTemplate, *args, **kwargs):
    # Replace any positional parameters
    for i in range(0, len(args)):
        tmp = '{%s}' % str(1+i)
        while True:
            pos = stringTemplate.find(tmp)
            if pos < 0:
                break
            stringTemplate = stringTemplate[:pos] + \
                             str(args[i]) + \
                             stringTemplate[pos+len(tmp):]
    # Replace any named parameters
    for key, val in kwargs.items():
        tmp = '{%s}' % key
        while True:
            pos = stringTemplate.find(tmp)
            if pos < 0:
                break
            stringTemplate = stringTemplate[:pos] + \
                             str(val) + \
                             stringTemplate[pos+len(tmp):]
    return stringTemplate

 #real example
 stringTemplate = 'pos1={1} pos2={2} pos3={3} foo={foo} bar={bar}'
 print(formatString(stringTemplate, 1, 2))
 #output: pos1=1 pos2=2 pos3={3} foo={foo} bar={bar}
 print(formatString(stringTemplate, 42, bar=123, foo='hello'))
 #output: pos1=42 pos2={2} pos3={3} foo=hello bar=123

 import re
 def isValidEmail(email):
    if len(email) > 7:
    if re.match("^.+@([?)[a-zA-Z0-9-.]+.([a-zA-Z]{2,3}|[0-9]{1,3})(]?)$", email) != None:
        return True
    return False

 if isValidEmail("[email protected]") == True :
    print "This is a valid email address"
 else:
    print "This is not a valid email address"
    

 import time
 ## 24 hour format ##
 print (time.strftime("%H:%M:%S"))
 ## 12 hour format ##
 print (time.strftime("%I:%M:%S"))
 ## dd/mm/yyyy format
 print (time.strftime("%d/%m/%Y"))
 ## mm/dd/yyyy format
 print (time.strftime("%m/%d/%Y"))
 ## dd/mm/yyyy hh:mm:ss format
 print (time.strftime('%d/%m/%Y %H:%M:%S'))
 ## mm/dd/yyyy hh:mm:ss format
 print (time.strftime('%m/%d/%Y %H:%M:%S'))


 a = "Learning Python is super fun!"
 "super" in a
 ##output: True

 import sys
 x=1500
 sys.setrecursionlimit(x) # Defaults at 1000
	food = ["pizza", "tacos", "ice cream", "cupcakes", "burgers"]
	print(', '.join(str(x) for x in food))
	print(*food, sep=", ")

	#output: pizza, tacos, ice cream, cupcakes, burgers

	p = backwards
	print p[::-1]

	#output: sdrawkcab

	name = "Jon"
	age = 28
	fave_food = "burritos"
	fave_color = "green"

	string = "Hey, I'm {0} and I'm {1} years old. I love {2} and my favorite color is {3}.".format(name,
	age, fave_food, fave_color)
	print(string)

	#output: Hey, I'm Jon and I'm 28 years old. I love burritos and my favorite color is green.

	x = array([3, 6, 9, 12])
	x/3.0
	print(x)

	#output: array([1, 2, 3, 4])

	y = [3, 6, 9, 12]
	y/3.0
	print(y)

	#output: exception -> arrays are more straightforward than lists for arithmetic operations.

	age = 15
	# Conditions are evaluated from left to right
	print('kid' if age < 18 else 'adult')

	#output: kid

	print(('adult', 'kid')[age < 20])
	#output: kid
	print({True: 'kid', False: 'adult'}[age < 20])
	#output: kid

	import random
	items = ['here', 'are', 'some', 'strings', 'of',
	'which', 'we', 'will', 'select', 'one']
	rand_item = items[random.randrange(len(items))] #one item

	rand_items = [items[random.randrange(len(items))] #multiple items
	for item in range(4)]

	rand_item = random.choice(items) #easier

	rand_items = random.sample(items, n) #multiple items


	os.access('foo.txt', os.R_OK)
	True # This means the file exists AND you can read it.
	os.access('foo.txt', os.W_OK)
	False # You cannot write to the file. It may or may not exist.

	try:
	f = open('foo.txt')
	f.close()
	except IOError as e:
	print('Uh oh!')

	def file_accessible(filepath, mode):
	''' Check if a file exists and is accessible. '''
	try:
	f = open(filepath, mode)
	f.close()
	except IOError as e:
	return False
	return True


	def lessThan(cutoffVal, *vals) :
	''' Return a list of values less than the cutoff. '''
	arr = []
	for val in vals :
	if val < cutoffVal:
	arr.append(val)
	return arr
	print(lessThan(10, 2, 17, -3, 42))
	#output: [2, -3]

	def printVals(prefix='', **dict):
	# Print out the extra named parameters and their values
	for key, val in dict.items():
	print('%s [%s] => [%s]' % (prefix, str(key), str(val)))


	def formatString(stringTemplate, args, *kwargs):
	# Replace any positional parameters
	for i in range(0, len(args)):
	tmp = '{%s}' % str(1+i)
	while True:
	pos = stringTemplate.find(tmp)
	if pos < 0:
	break
	stringTemplate = stringTemplate[:pos] + \
	str(args[i]) + \
	stringTemplate[pos+len(tmp):]
	# Replace any named parameters
	for key, val in kwargs.items():
	tmp = '{%s}' % key
	while True:
	pos = stringTemplate.find(tmp)
	if pos < 0:
	break
	stringTemplate = stringTemplate[:pos] + \
	str(val) + \
	stringTemplate[pos+len(tmp):]
	return stringTemplate

	#real example
	stringTemplate = 'pos1={1} pos2={2} pos3={3} foo={foo} bar={bar}'
	print(formatString(stringTemplate, 1, 2))
	#output: pos1=1 pos2=2 pos3={3} foo={foo} bar={bar}
	print(formatString(stringTemplate, 42, bar=123, foo='hello'))
	#output: pos1=42 pos2={2} pos3={3} foo=hello bar=123

	import re
	def isValidEmail(email):
	if len(email) > 7:
	if re.match("^.+@([?)[a-zA-Z0-9-.]+.([a-zA-Z]{2,3}\|[0-9]{1,3})(]?)$", email) != None:
	return True
	return False

	if isValidEmail("[email protected]") == True :
	print "This is a valid email address"
	else:
	print "This is not a valid email address"


	import time
	## 24 hour format ##
	print (time.strftime("%H:%M:%S"))
	## 12 hour format ##
	print (time.strftime("%I:%M:%S"))
	## dd/mm/yyyy format
	print (time.strftime("%d/%m/%Y"))
	## mm/dd/yyyy format
	print (time.strftime("%m/%d/%Y"))
	## dd/mm/yyyy hh:mm:ss format
	print (time.strftime('%d/%m/%Y %H:%M:%S'))
	## mm/dd/yyyy hh:mm:ss format
	print (time.strftime('%m/%d/%Y %H:%M:%S'))


	a = "Learning Python is super fun!"
	"super" in a
	##output: True

	import sys
	x=1500
	sys.setrecursionlimit(x) # Defaults at 1000