"파이썬 입문"의 두 판 사이의 차이

1 기본 문법[편집]

==

2 파이썬 모듈 임포트 방법[편집]

1. 1. import os

  : 일반적인 import  방식  

1. 1. from os import xxx

  : xxx 함수만 import 하는 방식

1. 1. from os import *

  : 모든 함수를 import 하는 방식

3 변수[편집]

>>> a = 10
>>> id(a)
</python>

== 데이터 타입 ==
<source lang=python>
# int 
>>> a = 3
>>> type(a)
int
</python>

# float
# str
# bool
# complex
<source lang=python>
>>> c = 3 + 4j
>>> type(c)
complex
</python>

== 문자열 조작 함수 ==
=== len(s)	===
<source lang=python>
>>> mystring = “hello world”
>>> len(mystring)
11

>>> mystring[0]
‘h’

>>> mystring[0:5]
‘hello’

>>> mystring[6:]
‘world’

>>> companies = “yahoo google”

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

>>> ‘google’ in companies
True

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

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

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

>>> s = “yahoo google”

>>> s.find(“google”)
6

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