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"파이썬 입문"의 두 판 사이의 차이

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(변수)
19번째 줄: 19번째 줄:
 
complex
 
complex
 
</source>
 
</source>
 +
 +
== 데이터 구조체 ==
 +
=== 리스트 ===
 +
==== create ====
 +
<source lang=python>
 +
>>> names = [ ]
 +
>>> names = [‘a’, ‘b’, ‘c’, ‘d, ‘e’]
 +
</source>
 +
==== len(s) ====
 +
<source lang=python>
 +
>>> names = [‘a’, ‘b’, ‘c’, ‘d, ‘e’]
 +
>>> len(names)
 +
5
 +
</source>
 +
==== indexing ====
 +
<source lang=python>
 +
>>> names = [‘a’, ‘b’, ‘c’, ‘d, ‘e’]
 +
>>> names[0]
 +
‘a’
 +
>>> names[1]
 +
‘b’
 +
</source>
 +
==== append ====
 +
<source lang=python>
 +
>>> names = [‘a’, ‘b’,’c’]
 +
>>> names.append(‘d’)
 +
>>> names
 +
[‘a’, ‘b’, ‘c’, ‘d’]
 +
</source>
 +
==== insert ====
 +
<source lang=python>
 +
>>> names = [‘a’, ‘b’, ‘c’]
 +
>>> names.insert(1, ‘e’)
 +
>>> names
 +
[‘a’, ‘e’, ‘b’, ‘c’]
 +
</source>
 +
==== comprehension ====
 +
<source lang=python>
 +
>>> data = [3, 4, 5]
 +
>>> float_data = [float(d) for d in data]
 +
</source>
 +
 +
=== 튜플 ===
 +
=== 딕셔너리 ===
 +
 +
  
 
== 문자열 조작 함수 ==
 
== 문자열 조작 함수 ==

2020년 4월 10일 (금) 10:12 판

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1 기본 문법[편집]

2 데이터 타입[편집]

# int 
>>> a = 3
>>> type(a)
int
  1. float
  2. str
  3. bool
  4. complex
>>> c = 3 + 4j
>>> type(c)
complex

3 데이터 구조체[편집]

3.1 리스트[편집]

3.1.1 create[편집]

>>> names = [ ]
>>> names = [‘a’, ‘b’, ‘c’, ‘d, ‘e’]

3.1.2 len(s)[편집]

>>> names = [‘a’, ‘b’, ‘c’, ‘d, ‘e’]
>>> len(names)
5

3.1.3 indexing[편집]

>>> names = [‘a’, ‘b’, ‘c’, ‘d, ‘e’]
>>> names[0]
‘a’
>>> names[1]
‘b’

3.1.4 append[편집]

>>> names = [‘a’, ‘b’,’c’]
>>> names.append(‘d’)
>>> names
[‘a’, ‘b’, ‘c’, ‘d’]

3.1.5 insert[편집]

>>> names = [‘a’, ‘b’, ‘c’]
>>> names.insert(1, ‘e’)
>>> names
[‘a’, ‘e’, ‘b’, ‘c’]

3.1.6 comprehension[편집]

>>> data = [3, 4, 5]
>>> float_data = [float(d) for d in data]

3.2 튜플[편집]

3.3 딕셔너리[편집]

4 문자열 조작 함수[편집]

4.1 len(s)[편집]

>>> mystring = “hello world”
>>> len(mystring)
11

4.2 indexing[편집]

>>> mystring[0]
‘h’

4.3 slicing[편집]

>>> mystring[0:5]
‘hello’

>>> mystring[6:]
‘world’

4.4 문자열.split(S)[편집]

>>> companies = “yahoo google”

>>> companies.split(‘ ’)
[‘yahoo’, ‘google’]

4.5 in[편집]

>>> ‘google’ in companies
True

4.6 combining[편집]

>>> s1 = “hello”
>>> s2 = “world”
>>> s3 = s1 + ‘ ’ + s2
>>> s3
“hello world”

4.7 replace[편집]

>>> a = “yahoo;google”
>>> new_a = a.replace(‘;’, ‘-’)
>>> new_a
“yahoo-google”

4.8 index[편집]

>>> s = “yahoo google”
>>> s.index(“google”)
6

4.9 문자열.find(x)[편집]

>>> s = “yahoo google”

>>> s.find(“google”)
6

4.10 stripping[편집]

>>> a = “  yahoo  ”
>>> new_a = a.strip()
>>> new_a
“yahoo”

5 파이썬 제어문[편집]

파이썬 기본 제어문.png

6 파이썬 모듈 임포트 방법[편집]

    1. import os
  : 일반적인 import  방식  
    1. from os import xxx
  : xxx 함수만 import 하는 방식
    1. from os import *
  : 모든 함수를 import 하는 방식

7 변수[편집]

https://drive.google.com/file/d/19QerDTdnDPaoVXjOAGYHyDnCnLx1UUUf/view?usp=drivesdk

>>> a = 10
>>> id(a)