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python_re_study...1 ๋ณธ๋ฌธ

Development/Python

python_re_study...1

Kirok Kim 2021. 12. 15. 21:08
  • ๋ฌธ์ž์—ด ์ž๋ฃŒํ˜•
    • formatํ•จ์ˆ˜
    "I eat {0} apples".format(3)
    'I eat 3 apples'
    
    • f๋ฌธ์ž์—ด ํฌ๋งคํŒ…
    >>> name = 'ํ™๊ธธ๋™'
    >>> age = 30
    >>> f'๋‚˜์˜ ์ด๋ฆ„์€ {name}์ž…๋‹ˆ๋‹ค. ๋‚˜์ด๋Š” {age}์ž…๋‹ˆ๋‹ค.'
    '๋‚˜์˜ ์ด๋ฆ„์€ ํ™๊ธธ๋™์ž…๋‹ˆ๋‹ค. ๋‚˜์ด๋Š” 30์ž…๋‹ˆ๋‹ค.'
    
    • ์ด์Šค์ผ€์ดํ”„ ์ฝ”๋“œ์ฝ”๋“œ์„ค๋ช…
      \n ๋ฌธ์ž์—ด ์•ˆ์—์„œ ์ค„์„ ๋ฐ”๊ฟ€ ๋•Œ ์‚ฌ์šฉ
      \t ๋ฌธ์ž์—ด ์‚ฌ์ด์— ํƒญ ๊ฐ„๊ฒฉ์„ ์ค„ ๋•Œ ์‚ฌ์šฉ
      \\ ๋ฌธ์ž \๋ฅผ ๊ทธ๋Œ€๋กœ ํ‘œํ˜„ํ•  ๋•Œ ์‚ฌ์šฉ
      \' ์ž‘์€๋”ฐ์˜ดํ‘œ(')๋ฅผ ๊ทธ๋Œ€๋กœ ํ‘œํ˜„ํ•  ๋•Œ ์‚ฌ์šฉ
      \" ํฐ๋”ฐ์˜ดํ‘œ(")๋ฅผ ๊ทธ๋Œ€๋กœ ํ‘œํ˜„ํ•  ๋•Œ ์‚ฌ์šฉ
      \r ์บ๋ฆฌ์ง€ ๋ฆฌํ„ด(์ค„ ๋ฐ”๊ฟˆ ๋ฌธ์ž, ํ˜„์žฌ ์ปค์„œ๋ฅผ ๊ฐ€์žฅ ์•ž์œผ๋กœ ์ด๋™)
      \f ํผ ํ”ผ๋“œ(์ค„ ๋ฐ”๊ฟˆ ๋ฌธ์ž, ํ˜„์žฌ ์ปค์„œ๋ฅผ ๋‹ค์Œ ์ค„๋กœ ์ด๋™)
      \a ๋ฒจ ์†Œ๋ฆฌ(์ถœ๋ ฅํ•  ๋•Œ PC ์Šคํ”ผ์ปค์—์„œ '์‚‘' ์†Œ๋ฆฌ๊ฐ€ ๋‚œ๋‹ค)
      \b ๋ฐฑ ์ŠคํŽ˜์ด์Šค
      \000 ๋„ ๋ฌธ์ž
  • ๋ฌธ์ž์—ด ๊ด€๋ จ ํ•จ์ˆ˜
    • count('x')
    • x๋ฌธ์ž ์„ธ๊ธฐ
    • find('x')
    • ์œ„์น˜ ์•Œ๋ ค์ฃผ๊ธฐ
    • index('x')
    • ",".join('abcd') / ",".join(['a','b','c','d'])
    • ๊ฐ’ ์‚ฌ์ด ,์ฐ๊ธฐ
    • .upper()
    • .lower()
    • lstrip() rstrip()
    • ์™ผ์ชฝ๊ณต๋ฐฑ / ์˜ค๋ฅธ์ชฝ ๊ณต๋ฐฑ ์ง€์šฐ๊ธฐ
    • a.replace("B","b")
    • B๋ฅผ b๋กœ ๋Œ€์ฒด
    • a.split() a.split(:)
    • ๊ณต๋ฐฑ์œผ๋กœ ๋‚˜๋ˆ„๊ณ  :๊ธฐ์ค€์œผ๋กœ ๋‚˜๋ˆˆ๋‹ค.
  • ๋ฆฌ์ŠคํŠธ ๊ด€๋ จ ํ•จ์ˆ˜
    • append
    • ์ถ”๊ฐ€
    • sort
    • ์ •๋ฆฌ
    • reverse
    • ๋’ค์ง‘๊ธฐ
    • index(x)
    • ๋งค๊ฐœ๋ณ€์ˆ˜ x ์ธ๋ฑ์Šค ๊ฐ’ ํ™•์ธ
    • insert(a,b)
    • a์ž๋ฆฌ์— b์‚ฝ์ž…
    • remove(x)
    • ์ฒซ๋ฒˆ์งธ๋กœ ๋‚˜์˜ค๋Š” x๊ฐ’ ์‚ญ์ œ
    • pop()
    • ๋งจ ๋งˆ์ง€๋ง‰ ์š”์†Œ ๋ฐ˜ํ™˜ํ•˜๊ณ  ๋ฆฌ์ŠคํŠธ์—์„œ๋Š” ์‚ญ์ œ
    • count(x)
    • x๊ฐ’ ์นด์šดํŠธ ํ›„ ๊ฐฏ์ˆ˜ ๋ฐ˜ํ™˜
    • extend([4,5])
    • 4,5๋ฅผ ๋ฆฌ์ŠคํŠธ์— ์ถ”๊ฐ€ ๋ณ€์ˆ˜๋„ ๊ฐ€๋Šฅ a+=[4,5]๋„ ๊ฐ€๋Šฅ
  • ํŠœํ”Œ
    • ์‚ญ์ œ del a[0]
    • ๋ณ€๊ฒฝ a[0] ='v'
    • a*3 ⇒ (1,2,3,1,2,3,1,2,3)
    • len(a)⇒3
  • a=() a=1,2,3
  • ๋”•์…”๋„ˆ๋ฆฌ
    • ์ถ”๊ฐ€
    a[2] = 'b'
    >>> a
    {1: 'a', 2: 'b'}
    
    • ์‚ญ์ œ del a[1]
    • a['a'] ⇒ [1,2,3]
    • a.keys() ⇒ dict_keys(['1', '2'])
a = {'name': 'pey', 'phone': '0119993323', 'birth': '1118'}
>>> for k in a.keys():
	    print(k)
name
phone
birth
>>> list(a.keys())
['name', 'phone', 'birth']

>>> a.values()
dict_values(['pey', '0119993323', '1118'])

>>> a.items()
dict_items([('name', 'pey'), ('phone', '0119993323'), ('birth', '1118')])

 

  • a.clear()
>>> a.get('phone')
'0119993323'
>>> 'name' in a
True
>>> 'email' in a
False
  • a = { 'a': [1,2,3]}
  • set
    • set ⇒ list
    >>> l1 = list(s1)
    >>> l1
    [1, 2, 3]
    
    • set ⇒ tuple
    >>> t1 = tuple(s1)
    >>> t1
    (1, 2, 3)
    
    • ๊ต์ง‘ํ•ฉ
    >>> s1 = set([1, 2, 3, 4, 5, 6])
    >>> s2 = set([4, 5, 6, 7, 8, 9])
    
    >>> s1 & s2
    {4, 5, 6}
    
    >>> s1.intersection(s2)
    {4, 5, 6}
    
    • ํ•ฉ์ง‘ํ•ฉ
    >>> s1 | s2
    {1, 2, 3, 4, 5, 6, 7, 8, 9}
    
    >>> s1.union(s2)
    {1, 2, 3, 4, 5, 6, 7, 8, 9}
    
    • ์ฐจ์ง‘ํ•ฉ
    >>> s1 - s2
    {1, 2, 3}
    >>> s2 - s1
    {8, 9, 7}
    
    >>> s1.difference(s2)
    {1, 2, 3}
    >>> s2.difference(s1)
    {8, 9, 7}
    
    • ์ถ”๊ฐ€ 1๊ฐœ
    >>> s1 = set([1, 2, 3])
    >>> s1.add(4)
    >>> s1
    {1, 2, 3, 4}
    
    • ์ถ”๊ฐ€ ์—ฌ๋Ÿฌ๊ฐœ
    >>> s1 = set([1, 2, 3])
    >>> s1.update([4, 5, 6])
    >>> s1
    {1, 2, 3, 4, 5, 6}
    
    • ์ œ๊ฑฐํ•˜๊ธฐ
    >>> s1 = set([1, 2, 3])
    >>> s1.remove(2)
    >>> s1
    {1, 3}
    
  • >>> s1 = set([1,2,3]) >>> s1 {1, 2, 3} >>> s2 = set("Hello") >>> s2 {'e', 'H', 'l', 'o'}
  • ๋ณ€์ˆ˜
b = a[:]
b = copy(a)
b = a.copy()
์ด๊ฒฝ์šฐ ์„œ๋กœ ๋‹ค๋ฅธ ๊ฐ์ฒด์ž„
a, b = ('python', 'life')
(a, b) = 'python', 'life'
[a,b] = ['python', 'life']
a = b = 'python'
a, b = ('python', 'life')
(a, b) = 'python', 'life'
[a,b] = ['python', 'life']
a = b = 'python'

์ฐธ๊ณ  : https://wikidocs.net/book/1

 

์ ํ”„ ํˆฌ ํŒŒ์ด์ฌ

** ์ ํ”„ ํˆฌ ํŒŒ์ด์ฌ ์˜คํ”„๋ผ์ธ ์ฑ…(๊ฐœ์ •ํŒ) ์ถœ๊ฐ„ !! (2019.06) ** * [์ฑ… ๊ตฌ์ž… ์•ˆ๋‚ด](https://wikidocs.net/4321) ์ด ์ฑ…์€ ํŒŒ์ด์ฌ ...

wikidocs.net

 

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