Python CodeBook

Best Practices

• 7 Tips for writing better Python: https://www.youtube.com/watch?v=VBokjWj_cEA
  • TIMESTAMPS
  • enumerate()
  • zip()
  • Swapping values
  • Checking key in dictionary
  • for ... else
  • File reading, 'with'
  • Exception Handling

IF Statements

• One line ‘IF’ statement: 'Yes' if fruit == 'Apple' else 'No'

Dictionaries

• Check for 'None' values in a dictionary. If key = None, remove the key from the dictionary

for key in list(body):
    if not body[key]:
        body.pop(key)

Requests module

• Need SSL certificate for SSL error, otherwise set: verify=false

Classes

Functions

• tqdm library for timing programs

for company in tqdm(no_match_list_one,  desc='Stage 2 matching', leave=True):
	{logic}

Fuzzywuzzy library for string matching

• to make it faste: http://rpiai.com/faster-string-matching/

Enumerate

for enum_name, event in enumerate(range(events)):
    print("Enum: {} || Event: {}".format(enum_name, event))
  	# Enum: 0 || Event: 0
  	# Enum: 1 || Event: 1
  	# Enum: 2 || Event: 2
   	# Enum: 3 || Event: 3
  	# Enum: 4 || Event: 4

for enum_name, event in enumerate(range(5), 1):
	print("Enum: {} || Event: {}".format(enum_name, event))
  	# Enum: 1 || Event: 0
  	# Enum: 2 || Event: 1
  	# Enum: 3 || Event: 2
  	# Enum: 4 || Event: 3
  	# Enum: 5 || Event: 4

Requests module

• Mocking API requests with unittest: http://engineroom.trackmaven.com/blog/real-life-mocking/

Decorators

• Step-by-Step introduction: https://dbader.org/blog/python-decorators

Data Structures

• Data type conversion = 2 ways, implicit (coercion) and explicit (casting)
  • implicit = 4.0 / 2 = 2.0 (automatically converts to float)
  • explicit = str(4) or float(4)