The life of TB

# Width and Precision # d1 = '%5d' % -10# print(d1) # d2 = '%5d' % 10# print(d2) # dd = '%05d' % -10# print(dd) # s = '%.*s' % (3, 'apple')# print(s) # from math import pi # pp = '[%010.2f]' % pi# print(pp) # pp2 = '[%-10.2f]' % pi# print(pp2) # p = '[%9f]' % pi# print(p) # p = '[%5.2f]' % pi# print(p) # p = '[%.2f]' % pi# print(p) # p = '[%0.2f]' % pi# print(p) # priceOfHam = 'Price of ham: $%d..

Python 2016. 6. 4. 00:27

# Sequential Searchdef seq_search(arr, ele):pos = 0 while len(arr) > pos:if arr[pos] == ele:return Trueelse:pos += 1 return False o = seq_search([1, 2, 3,], 3)print(o) # 결과True # Binary Searchdef binary_search(arr, ele):first = 0last = len(arr) - 1 found = False while first arr[k + 1]:temp = arr[k]arr[k] = arr[k + 1]arr[k + 1] = tempreturn arr arr = [5, 3, 7, 2]o = bubble_sort(arr)print(o) # 결과[..

Python 2016. 5. 31. 12:53

# Stack Implementation class Stack(object): def __init__(self): self.items = [] def isEmpty(self): return self.items == [] def push(self, item): self.items.append(item) def pop(self): return self.items.pop() def peek(self): return self.items[len(self.items)-1] def size(self): return len(self.items) s = Stack() print(s.isEmpty()) s.push(1) s.push('two') print(s.peek()) print(s.size()) s.pop() s.p..

Python 2016. 5. 27. 11:37

http://python-3-patterns-idioms-test.readthedocs.io/en/latest/PatternConcept.html So the goal of design patterns is to isolate changes in your code. If you look at it this way, you’ve been seeing some design patterns already in this book. For example, inheritance can be thought of as a design pattern (albeit one implemented by the compiler). It allows you to express differences in behavior (that..

Python 2016. 5. 17. 10:30

# inclusive_range# start, stop, step class Inclusive_range():def __init__(self, *args):num_args = len(args)if num_args < 1:raise TypeError('requires at least one argument')elif num_args == 1:self.start = 0self.stop = args[0]self.step = 1elif num_args == 2:(self.start, self.stop) = argsself.step = 1elif num_args == 3:(self.start, self.stop, self.step) = argselse:raise TypeError('expected at most ..

Python 2016. 5. 12. 14:46

# Data Transfer Object class Pool:def __init__(self, **kwargs):self.__dict__ = kwargs m = Pool(one=1, two=2, three=3)m.four=4print(m.one)print(m.two, m.three) # 결과12 3

Python 2016. 5. 11. 15:29

# 멤버 변수와 같은 이름의 getter, setter 함수를 정의해서# 외부에서는 멤버를 직접 액세스하는 것처럼 보이지만# 사실상 동일 이름의 함수를 호출해서 액세스 가능한 인터페이스를 제공하는 것# 메소드로 별도 구현할 수 있으나 코드가 복잡해질 우려가 있음 class Prop():@propertydef value(self):return self._value @value.setterdef value(self, value):self._value = value @value.deleterdef value(self):del self._value p1 = Prop()p1.value = 1print(p1.value) # 결과1 # property를 사용하는 두 번째 방법# legacy 코드가 있을때 크게 바꾸지..

Python 2016. 5. 11. 14:08

# logging import logging logging.basicConfig(level=logging.INFO) logging.debug('This message will be ignored')logging.info('This should be logged')logging.warning('And this, too') # 결과INFO:root:This should be loggedWARNING:root:And this, too # 상수 print(logging.DEBUG)print(logging.INFO)print(logging.WARNING) # 결과102030 # 파일 저장 import logging logging.basicConfig(level=logging.INFO, filename='logs...

Python 2016. 5. 10. 09:51