Passing a dictionary to a function as keyword parameters
Use ** operator to unpack the dictionary
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# example
d = dict(p1=1,p2=2)
def f2(p1,p2):
print p1, p2
f2(**d)
type casting
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# cast float to int
num1 = 5.999
num1 = int(num1)
dictionary <-> json
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import json
dict1 = { 'name' : 'song', 'age' : 10 }
# CONVERT dictionary to json using json.dump
json_val = json.dumps(dict1)
dict2 = json.loads(json_val)
Difference between == and is operator
== compares the values of both the operands and checks for value equality. is checks if both operands refer to the same object or not.
TypeError: sequence item 0: expected str instance, int found
''.join(list_name) 을 쓸때, list의 모든 element들은 문자여야한다. 즉 list에 저장된 값이 정수이거나 실수이면 에러가 발생한다.
bytes를 String으로 변환하는 방법
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# decode bytes to string
result = bytes.decode('utf-8') # 방법1
result = str(bytes, 'utf-8') # 방법2
private method convention
use underscore(_) at the beginning of name of method