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http://www.hackerschool.org/HS_Boards/zboard.php?id=Free_Lectures&no=1147 []


¥ ̽
by Pupp3tM, a.k.a. David Borowitz
2001. 11.11 ѱ johnsonj

1. Ұ
a. ̶̽ ΰ?
b. Ϳ Ͽ
2. ù° α׷
a. Hello, World!
b.
3.
a. : ڿ, , .
b. а
4. Է/
a. ϱ
b. ڿ ȣۿ
5. α׷
a. ...(What If...)
b. ...(For Ever...)
c. While We...and Others
6. ̽
a. !
b. ڿ ׸ ǥȭ
c. (I/O)
7.
a. f ׸ ϱ
b.
c. - Լ
8. 鼭
a. ̽ ޺
b.

̶̽ ΰ?
̽, ؼ, ũƮ Դϴ. ɻδ ް , ƴ?׷ ˷
ϴ. ذϱ ħ Դϴ. - μ ۾ Ӹ ƴ϶, ϴ. ٸ ΰ (addons) 밡Ͽ MP3κ (
н) ֽϴ. ̽㿡 ߰ α׷ϱ⿡
ϰ ִ μ, ̰ پ 뵵 ϴٴ Դϴ.
̽ нκ , ÷ ֽϴ. ̽ , 켱 Python.
org ż, !
ħ α׷  ƴ մϴ. C Perl
 ۼϿϴ, ϸ , ׳ Ѿ ũ ϴ.
̸ ü ΰ, ̷ ? ΰ? ƴմϴ, . ̽ â
ڴ Ƽ ̽(Monty Python) ̾ 絵 ׷ϴ. ̸ BBC "Monty
Python's Flying Circus," , " Ƽ ̽ dzڱ ϴ
Ӹ ƴ϶, ݷȴ" ϰ ֽϴ. ׷ ұϰ, Ƽ ̽ ȭ κ
Դϴ. ׷ ణ οϿ Դϴ :)
ɾƼ, ݶ , ̽ , ׸ غ ϼ :)
ֻ
Ϳ Ͽ
̽ ũƮ, , Դϴ. Ϸ Cʹ ٸ, 츮 ̽㿡...(巳
ε §)...̽ ͸ ϴ. ̽ Ȯϰ, н Ȥ ڽ ġϿ,
'python'̶ Ÿϼ (: Ÿ϶ ϸ鼭 οȣ οȣ Ÿ
. ̹ ׷ ϼ Ȯ, ׷...). Ȥ ٸ  
̴ٸ, 𰡸 ޾ Դϴ: Ʈ ֽϴ ( Ϳ ">>>" ڵ)! ǥԷ
(stdin) ٸ "Usage: python <script-file>"̶ ʽϴ! ٷ װԴϴ,
ȣȭ 带 ֽϴ. 忡,  ̽ ɾ Ÿ װ ణ
, ũƮκ Ÿ Ͱ ۵մϴ. ߿ , (Ҵ ϰ)
ȯϴ Ȥ  ŸѴٸ, ڵ Դϴ. 𰡸
⿡ (׸ ⿡) մϴ! Ʈ '1 + 1' Ÿϰ 輼.
ϱ? 2! ׷ ƴմϴ:
>>> 1 + 1
2
Ȥ Լ ̷ (Ʈ3b )  ֽϴ.
ڿ ۾ Դϴ:
>>> "elp! I'm being oppressed"
"elp! I'm being oppressed"
¥ Ƽ ̽ ο ָϼ :). ·, ̰ Ϳ Դϴ. 츮
繰 ٽ ϴ. , ũƮ ְ ʴٸ,
ϰ װ Ÿ (Ȥ ؼ ̴ ̰),
۵ Դϴ. , 캾ô :).  ƮƮ ִ´ٸ, װ
ũƮθ ȿ ִٴ ̸ ȣȭ δ ۵ ʴ´ٴ մϴ. Դϴٸ.
! ǻ Ѱ. ͸ , 'quit' Ÿϴ Ͱ 
ϴ.  ( 𸨴ϴ), װ ۵ ʽϴ. Ctrl+D Ͽ մϴ (
н ׷ϴٸ, 쿡 ׽Ʈغ ʾҽϴ). · 'quit'̶ Ÿϸ,
'Ctrl-D Ͽ ϼ(Use Ctrl-D (i.e. EOF) to exit).' Ͽ Դϴ. ׷ װ
.
ֻ
ù ° α׷
Hello, World!
ϴ, α׷ ħ о ִٸ ȭ鿡 "Hello, World!" 
ϴ α׷ ִٴ ̴ϴ. ϰԵ, ħ ٸ ʽ
ϴ. ϴ, ô:
#!/usr/bin/python
# н ʿմϴ; ̽ η ٲټ
hello = "Hello, World!"
print hello
ٷ ̰Դϴ! ̰ ؽƮ Ͽ ְ, hello.py ̸, غø, 츮 ູ ϴ.
н 'chmod +x hello.py' Ͽ װ ʿ䰡 ֽϴ, ׷ 'python
hello.py' Ÿϼ. 쿡, Ȯϱδ .py ڵ ̽ Ϳ ˴
.
ֻ

"," Ƹ , "."̶ ϰ. ׷ϴ. ׷, Ͼ ܿ
Ǹ Դϴ. װ ڽϴ.
#!/usr/bin/python
, о ŵ, н ڿԸ ʿմϴ. ̰ ̽
ִ Ͽ ִµ ׸Ͽ ũƮ ֽϴ.
# н ʿմϴ; ̽ η ٲټ
̾, Ͻ , ̰ ߿ Ͽ ְ ֽϴ: ּ!
α׷Ӵ ڵ忡 ּ ʿϴٰ մϴ, ׷ # Էϸ ķ
ּ̰ ʹ Դϴ.
hello = "Hello, World!"
¥ ʿ ƴմϴ, ׷ ϳ θ Hello, World! ũƮ ణ
̹Ƿ, ·簣 ߰Ͽϴ. hello ڿ Դϴ, ߿ װͿ Ͽ
Դϴ, ׸ = ڴ "Hello, World!" Ҵմϴ. α׷ ִٸ
и Ȯմϴ.
print hello
̰ Դϴ, ϽŴ, hello մϴ. perl Ͻô ҳ (Ȥ ҳ :)
, ϳ ̸ οȣ ٴ Ͻ ʿ䰡 ֽϴ. ׷
߿ ǵ, װ ʹ մϴ.
ϴ! 츮 ù ° α׷Դϴ! ϱ ΰ ǻ ְڽϴ. ,
ƹ͵ ٴ ƽ ֽϴ, ̳ C ; ϴ. װ
̽ ϳԴϴ. װ ̶ ϴµ ֳϸ 鿩
ǰ, ڽŸ Դϴ...Ȥ װͿ 𸣰
ͼ ʿ䰡 ֽϴ.
ֻ

: ڿ, , .
̽㿡, ٸ  , Ÿ ֽϴ, ַ, ( е
) , ڿ, Ʈ, ׸ ֽϴ. Ʈ , "" Դϴ,
̻  ʰڽϴٸ, ̽(Intermediate Python)ǿ ణ ٷ
Դϴ.
. ? ڴ Դϴ. ű⿡ ҴϷ, Hello World! ڿ ߴ Ͱ Ȱ
ϴµ, ̸, = , ׸ Ͻô ϼ:
>>> a = 5
>>>
̸ Ͽ : ̽ Ȯϰ 󸶳 ϴ Ȯ ϴ( ˾ƾ
ϳ?), ׷ Ϲ 20 ̻ ڸ ȵ˴ϴ. ٸ ó, ̸
ĺ ڿ ٹ (_) մϴ, ׷  ʹ ٸ ٹڷ ֽϴ.
·, ڿ ؼ, ڿ и, ڵ ̷ ڿ մϴ. 
ƹ͵ ϴ. ڿ ؼ, οȣ ¸ ֽϴ ("" Ǵ ''), ׷
Ȯϼ. , ƮǸ ڿʿ ϰ Ѵٸ, ΰ Ȯ
ؾ ʿ䰡 ֽϴ. ڿ "" οȣ , װͿ ʿ ϴ, Ʈ
Ǹ ̼. ׷, '' οȣ ȿ ִٸ, ƮǸ Żų ʿ䰡 Դϴ.
Ͱ ƮǸ, οȣ ó, ڿ ʱ Դϴ.
ƮǸ ŻŰ, \ (缱) οȣ տ . ѹ غ! Ǹմϴ:
>>> "I'm Dave"
"I'm Dave"
>>> 'Python\'s my favorite language'
"Python's my favorite language"
>>> "\"I can't think of anything else to say!\" he said"
'"I can\'t think of anything else to say!" he said'
>>> 'That's too bad'
File "<stdin>", line 1
'That's too bad'
^
SyntaxError: invalid syntax
ָϼ. ù ° "" οȣ Ż ְ ,
ְ ֽϴ: οȣ ڿ , ̽ ϳ ⺻
ϰ ٸ ϳ Żų Դϴ. ; ̰ ũ Ѵٸ, ¿ \ ڴ
Դϴ. , οȣ ŻŰ ʾ Ͼ Դϴ. ̽
óϴ ٴ ġä ̴ϴ, ׷ ű⿡ ̻  ʰڽ
.
Ż⿡ Ͽ ڸ, ⿡ Żų ִ ڵ ֽϴ ( 'n'̶ '\n' Ͽ װ
ŻŰ):
n - newline Ѵ, . ο Ѵ.
t -
b - 缱. Ÿڵ ڸ Ѵ
a - ý
\ - 缱 Ѵ
r - ij Ѵ. ϰ ִ Ѵٸ newline ϼ.
ְ, װ ׷ Դϴ.
ڿ ؼ, װ͵ + ڷ (Բ ) ֽϴ. ȣ ڿ
ִٸ (. ڿ ȯϴ Լ ƴ϶), ʿϴ:
>>> 'holy' + 'grail'
'holygrail'
>>> 'BS' 'RF'
BSRF
ƮԴϴ. Ʈ   迭̶ Ҹ, Դϴ (, ϰԴ ƴ
...). Ʈ ٹ ȣ [] ȿ Բ ׷ϴ. Ʈ Ʈȿ
, ڿ ڱ ֽϴ, (** : ׷ Ȥ Ʈ
ϴ???). Ʈ Ҵϴ մϴ:
>>> a = [1, "thin", "mint", 0]
>>> a
[1, 'thin', 'mint', 0]
Ʈ ̸ ϰ ٵ ֽϴ, ׷ ̸ ٷ ڿ ȣ ΰ ȿ ǥ ڸ
ν, Ʈ ִ 鿡 ǥ ֽϴ. ǥ ڴ 0 Ѵٴ ָϼ
:
>>> a[0]
1
ǥ ڸ ؼ Ʈ ڿ Ͽ ֽϴ:
>>> a[-1]
0
ν ̰ ǥ Դϴ, ׷ ڿ ǿ 츮 ִ ͵
ٵ, ǥ Ʈ ϳ̻ ҿ ϴ ϴ. ǥ-ȣ⿡
ڿ ڽְ ֽϴ. ڿ ִ ڵ Ʈ ִ ҵó ൿմϴ:
>>> a = "BSRF"
>>> a[1]
S
׷ ϼ: Ʈ Ҹ ü , ڿ ׷ ʽϴ:
>>> a = [1, "thin", "mint", 0]
>>> b = "BSRF"
>>> a[3] = 4
>>> a
[1, 'thin', 'mint', 4]
>>> b[1] = "M"
Traceback (innermost last):
File "<stdin>Traceback (innermost last):
File "<stdin>", line 1, in ?
TypeError: object doesn't support item assignment", line 1, in ?
̰ Դϴ!  Ÿ ...
ֻ
а
̽㿡 ⺻ ڵ ֽϴ: +, -, *, /, **, ׸ %. б ٳ ̴ٸ +, -, *, ׸
/ ̷ ϴ ƽð. ** % ϴ. ** Դϴ:
>>> 2 ** 6
64
% ǥ Դϴ. ? . 𸣽ðڴٸ, % ڴ ° ڷ ù ° ڸ  ݴϴ. :
>>> 4 % 2
0
>>> 10 % 3
1
>>> 21 % 6
3
̷ ͵ õ ߿ , , 1 3 ٸ, 0 ´ٴ
̴ϴ. ̰ ̽ ۾ ׻ ġ ϱ Դϴ. εҼ ۾Ϸ
, . (Ҽ) ǥ 򰡿 ֱ⸸ ϼ:
>>> #޴ϴ
... 1/3
0
>>> #ϴ
... 1./3
0.333333333333
>>> # ϴ
... 1/3.
0.333333333333
⺻ ̿ܿ, ̽㿡 ڵ ֽϴ ( ϰ Ű?).
츮 ƿ ° װ͵ ϴ Դϴ, ׷ · ⿡ װ͵ Դϴ:
a == b a b Ѵ (a b ġӸ ƴ϶,  ֽϴ)
a > b a b ʰϴ Ѵ ( ȣ )
a < b a b ̸ Ѵ (.)
a >= b a b̻ Ѵ
a <= b a b Ѵ
a != b a b Ѵ
Ƹ ڿ Ʈ ͵ 񱳵 ִٴ ̰κ ׷
̴ϴ. , Ʈ (Ǵ ڿ) 񱳵 ؼ ũ ʿ ϴ:
>>> #ȯ 1 ǹϰ, 0 ǹմϴ
... [1, 2, 3, 4] > [1, 2, 3]
1
>>> [1, 2, 4] > [1, 2, 3]
1
>>> [1, 2, 3] < [1, 3, 2]
1
>>> [1, 2, -1] > [1, 2]
1
 Ʈ 񱳰 Ǵ ָϼ. ù ° 񱳰 ˴ϴ. ʴٸ,
񱳵˴ϴ. ϴٸ, 񱳰 ˴ϴ. ̷ ϳ Ʈ ִ ٸ
Ʈ ȿ ִ ӵ˴ϴ. ( ٸ Ʈ մϴ). °
: ù ° Ʈ 3° (ǥ2, )(3) ° Ʈ 3° (2) ŭ
ұϰ, ° Ʈ ù ° ū Ͱ ׷ ָ ʱ
ϴ; ° Ʈ ִ ° (3) ù ° Ʈ ° (2) ũٴ ˰, ߱
Դϴ (ȥȴٰ? ϴ). Ͱ null (. Ʈ ׸
), Ʈ Ůϴ ( 4° ).
ڿ Դϴ: . and, or, not (ް ٸ, xor ϴ). and
̶ ȯϰ, ̶, 0 ȯմϴ. or Դϴ, ׷ μ
ϳ non-zero (Ǵ ڿ ؼ non-null) Դϴ. , not Ѱ
0(null)̶ 1 ȯϰ μ 0 ƴ϶ 0 ȯմ. 캸:
>>> 1 and 4
4
>>> 2 or 0
2
>>> 'monty' and 'python'
'python'
>>> not 0
1
>>> not ''
1
ֻ
Է/
ϱ
츮 Hello, World! , ̹ μϴ ϳ, (-״) print ҽ
. print ޿ ׷Ͱ մϴ, ȭ鿡 ڿ Ǵ Ȥ
ϴ. print Էϴ ڵ newline, "\n", ߰˴ϴ.
>>> print "She's a witch!"
She's a witch!
>>> print 5 + 3
8
>>> a = "Burn her!"
>>> print a
Burn her!
>>> #̰ ϴ 𸥴ٰ ؼ ; ̰ ̽ ǿ ٷ
ϴ
... print "Yeah, b" + a[1:]
Yeah, burn her!
ο ߰ ʱ⸦ Ѵٸ, ׷ 찡 ٵ, ϰ ',' print ִ
߰ϼ. ָ ̰ -ȣȭ 忡 ۵մϴ, ׷
ο file.py ʿ䰡 ֽϴ. ̰ õ :
#!/usr/bin/python
a = 5
print "The value of a is",
print a,
print "!"
:
The value of a is 5 !
print (-ڿ) ϴ ֽϴ. ĸ Ͻ ִµ,
ϳ Ͽ Դϴ. ߿ ڿ ȯϴ
, οȣ(``) ȿ װ ν ϰ ˴ϴ. ׸ ̰ ڿ, ġ ٸ
ڿ Ȥ Ͽ ϴ ó, ߰ϱ⸸ ϼ ( ). Ͽ :
>>> a=5
>>> # ¿ 鿡 ָϼ
... print "A duck costs $", a, "."
A duck costs $ 5 .
>>> # , ٸ Էմϴ
... print "A duck costs $" + `a` + "."
A duck costs $5.
stderr (Ǵ 迡 stdout stdin) ƴ ̶, ׷ϴ, ̽㿡 װ
ֽϴ. ׷ ̰ ణ ũ մϴ, ׷ ⿡ Ͼ
Ϸ (File I/O) ׸ (Modules) о ž մϴ. ·, ũƮ
:
#!/usr/bin/python
import sys #⿡ Ͽ о ö ʾҳ?
sys.stderr.write( "This is some error text\n" ) #⿡ \n ʿմϴ
#ֳϸ ڿ ְ ֱ Դϴ ( / о )
ϼ, ټҰ ̴µ, "This is some error text" մϴ. װ
"python test.py > /dev/null" (н) Ǵ "test.py > nul" (/) õ . ̰
ΰ? װ /dev/null Ǵ null, 뿡 ȯϿ ұϰ
Ǵ±. print ϴ , ǥ(stdout) ſ, ⿡ ǥؿ(stderr)
, ǥؿ ( ȭ鿡 Ÿ ) stdout ̸ α׷ ġ
п ˷ݴϴ.
ֻ
ڿ ȣȭϱ
ϴ, , ణ ֽϴ. ǿ ڷκ Է
޴ ٷ ̸, Ű 簡 ׷ ٷ Դϴ. ·, ̽㿡 ǥԷ
Լ ϼ˴ϴ: input raw_input. ϱ⿡ , raw_input ٷ
ڽϴ.
raw_input Ѱ μ ϴ, μ Ʈμ ڰ 𰡸 Էϱ⸦ ٸ ȿ
Դϴ. װ Ÿڵ ڿ ȯմϴ, ׷ Ҵ մϴ.
:
>>> a = raw_input( "Type something: " )
Type something: Dave
>>> a
'Dave'
ʹ . 'Dave' Ÿ ־ϴ, ׸ raw_input װ a Ҵ ߽ϴ.
" Ǹϱ ," ̷ Ͻð, "׷ ڿ Էϰ ƴ϶? ڳ Ʋ
ϸ?" , δ ֽϴ. ù ° input Լμ,
ø ð Դϴ. ٸ string.atoiε, ణ , Է ó ణ
߰Ͽ ݴϴ, ׷ װ ڿ ȯ Դϴ. ( ڼ :
Modules). ڼϰ  ʰڽϴ, ׷ ⿡ atoi ֽϴ:
>>> from string import atoi
>>> a = "5"
>>> a
'5'
>>> a = atoi(a)
>>> a
5
>>> #̽ 2.0 ̻ ִٸ, ̷ ϱ⸸ ϸ ˴ϴ.
... a = "5"
>>> a = int(a)
>>> a
5
Ϳ, a '5'κ 5 ȯǾϴ. ô. ѹٿ ,
Էϰ Ѵٸ input ϰ Դϴ. Input raw_inputó ۵մϴ, ̽
Է ״ Ѵٴ . װ ŽŹ ʴٸ, ̷
: ¥ ڸ ٸ, װ ڷ ˴ϴ.  [] ȣȿ ٸ, װ Ʈ
˴ϴ. ڿ ؼ οȣ ȿ  ֽϴ. Ȯ :
>>> a = input( "Enter something: " )
Enter something: 5
>>> a
5
>>> a = input( "Enter something: " )
Enter something: [3, 6, 'Hello']
>>> a
[3, 6, 'Hello']
>>> a = input( "Enter something: " )
Enter something: Hello
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "<string>", line 0, in ?
NameError: There is no variable named 'Hello'
! Ͼϱ? , input ϳ װ ٶ󺻴ٴ
Դϴ; input Hello ̸̶ ߽ϴ, ׷ Hello ٴ ߰ Ʋ
Ƚϴ. ̰ ذϴ , , , װ ħ 
. ν, ϴ Է ̶ ڸ Ͼ ʿ䰡 Դϴ (д
, дϴ, ڸ ð. ׷...). , ô.
ֻ
α׷
...(What If...)
, ÷ñ  , α׷ غ ôٸ, if ̴ϴ.
̷, װ ϱ Ͽ ü Ҿؾ ϴ 𸣰ڽϴ, ֳϸ
п ִ ̱ Դϴ, ? ϴ, ڵ
ﳪó? ϴ. ڵ带 ô:
>>> name = raw_input( "What's your name? " )
What's your name? David
>>> if name < "Dave":
... print "Your name comes before mine." #⿡ ִ Դϴ
... elif name > "Dave":
... print "Your name comes after mine."
... else:
... print "Hey, we have the same name!"
...
Your name comes after mine.
ƴ Դϴ, дϴ, ׷ fƾ ֽϴ. . ⿡
˰ ִ ٸ ʹ ٸ ġ ä Դϴ (׷ ʴٸ, ؾ ϳ). 츮
, 캼 Դϴ. , if Դϴ, ׸ Դϴ.
츮 Ҵ, ϳ ǥ ׸ ϳ ׸ ٸ ǥ ¿ ϴ. ׳
ǥĸ ֽϴ, ׸ ǥ non-zero 򰡵Ǹ if װ ̶ Ǵ
Դϴ. ׷ ·, ݷ ɴϴ, ׸ ο ɴϴ. newline
մϴ. Ȥ ׷ ο, ڵ 鿩 Ǿ ֽϴ. Ѱ
, װ , , , 鿩 Ǿ ֱ⸸ ϸ ˴ϴ. ڵ尡 Ϲ
ϴĿ , ̰ ִµ, ڵ Ƹٿ ̰ų ƴϸ ڵ
˴ϴ. װ մϴ. -̴ elifԴϴ. ڸ 鿩
Ǿ ʴٴ ֽϴ; װ ڵ Ͽ ʽϴ. elif life Ųٷ
ƴ϶, else if ٿ Դϴ. ù ° ƴ϶, մϴ.
, ϴ. else ɴϴ: Ĺ , ǵ ΰ ϸ, (Ͻô
ŭ , ġ C-Ÿ switch üϴ մϴ) ˴ϴ.
Ѹ ؼ, ״Դϴ.
ֻ
...(For Ever...)
Ϳ, ǰ ܰ ƴѰ? ·, ǥ ȸ̷ ưϴ: for ȸ.
for ȸ̴, ̳ PHP foreach ȸ̸ ʾҴٸ, Ƹ Ͱ ణ ٸ
Դϴ. ̽㿡 for ȸ̴ ڿ̳ Ʈ ׸ ȸϸ鼭 װ Ư, Ҵ
մϴ. ̸ ΰ ϱ մϴ. 캸 :
>>> for letter in "Brian": # İ ޵˴ϴ
... print letter
... #̰ "Brian" ڸ ο մϴ
...
Brian
մϴ. ׷ for ȸ̰ ϴٰ Ͻ 𸣰ڴµ ֳϸ װ
, 1 10 ڸ ȸ ʰ װ͵ i , *ٸ* ó, ְ ֱ Դ
. װ 𼭳 range() Լ غ˴ϴ. range(), for Բ Ǹ Ϻϰ,
ڸ Ʈ ȯ Դϴ (, ̽ âڵ ׷ ̸ ϴ
ϱ?). μ ڸ ֽϴ:
>>> #̰ 0 Ͽ, ڸ Ʈ ȯմϴ.
... range(6) #̰ μ δ Ʈ ʴ ٴ մ
.
[0, 1, 2, 3, 4, 5]
>>> #6 10-1, Ǵ 6-9 Ʈ.
... range(6,10) #10, , δ Ÿ ʴ´ٴ ϼ.
[6, 7, 8, 9]
>>> range(6,10,2) # , 2 ŭ .
[6, 8]
>>> range(10,6,-1) # ۵մϴ. , 6, ʽ
ϴ.
[10, 9, 8, 7]
̷ ͵ ִ ״ ڱ-Դϴ. ٸ ļ, ǥ ڷ, Ʈ ִ
ҵ ȸϱ⸦ Ѵٸ, len() Լ (̰ Ʈ ̸ ȯմϴ) range() Լ Բ
Դϴ:
>>> l = ["I'm", "not", "dead"]
>>> for i in range(len(l)):
... print "Item", i, "of l is "+l[i]
...
Item 0 of l is I'm
Item 1 of l is not
Item 2 of l is dead
, ̰ for ȸ̿ ְ ֽϴ. ϼ: foreach ذ
, range() ģԴϴ.
ֻ
While We...and Others
Ͽ ƹ͵ Դϴ. ׷, -- ȸ̷ ư
ϴ: while.
while ڵ մϴ, ׷  ̹ ǵ 
մϴ.
>>> while name != "Dave"
... name = raw_input( "What's my name? " )
...
What's my name? David
What's my name? Monty
What's my name? Dave
>>>
ã ֱ ϰ źϰ ִ ָϼ. , while ȸ̴
Է¿ ʿ ϴ. ⿡ ȸ̴ 1000 Թü Դϴ:
>>> c = 0
>>> while c**3 <= 1000:
... print `c`+"^3="+`c**3`
... c = c + 1
...
0^3=0
1^3=1
2^3=8
3^3=27
4^3=64
5^3=125
6^3=216
7^3=343
8^3=512
9^3=729
10^3=1000
ȸ ٸ ̸ ϴ: break, continue, ׸ else.
break ϰ ȸ̸ ͼ, dz Դϴ (else µ, ߿
Դϴ). continue ȸ ڽ ִ ߰ ݺ մϴ. else ,  ȸ̿
밡ѵ ( if ȵ), ȸ̰ Ŀ, . for ȸ ȿ ̻ ݺ ׸
ڵ带 մϴ. ణ--׷-ǰִ :
>>> for i in range(3):
... name = raw_input( "What's my name? " )
... if name != "Dave":
... print "Wrong!"
... continue
... else:
... print "Damn straight!"
... break
... else:
... print "Too many guesses! You're wrong!"
...
What's my name? David
Wrong!
What's my name? David
Wrong!
What's my name? David
Wrong!
Too many guesses! You're wrong!
>>> #ٽ õ , ׷ ڵ带 ⿡ ٽ Ÿ ʰڽϴ.
What's my name? Dave
Damn straight!
, ؼ ...
ֻ
̽
!
, 츮 - ǿ ֽϴ. ٸ μ Ʈ
̸ ϴ. Ȱȣ() ־ϴ,׷ δ Ҵϱ
ؼ Ȱȣ ʿ ʽϴ:
>>> t = (1, 2, 3) #Ϳ, 츮 ù ° Դϴ :)
>>> t
(1, 2, 3)
>>> t + 1, 2, 3 # ȣ ʿѰ? κ 쿡 մϴ...
>>> t
(1, 2, 3)
>>> t[0] # ȣ Ͽ ǥ ϴ
1
>>> t = 1, # Ĺ̿ ĸ ʿմϴ, ׷ t Դϴ
(1)
Ǹϱ, ̷ Ͻ 𸣰, ̷ "" Ʈ Ư ǹ̴ ΰ? , ϳ
, ٸ þȿ ֽϴ:
>>> tu = tuple(range(1,4)) #tuple Լ ָϼ
>>> ple = tuple(range(4,7))
>>> tuples = tu, ple
>>> tuples
((1, 2, 3), (4, 5, 6))
>>> print tuples[1][1] #̷ ϼ
5
̿ Ű C 2- 迭 (迭 迭) ͵, Ʈ
, üϿ ֽϴ. , Ǹ Ͽ tuple() Լ ָϼ. ̰ Ʈ
÷ ȯմϴ. ݴ, list() Լ մϴ. ٸ ִ 絵 մϴ:
(packing) Ǯ(unpacking). ϴ ⺻ 츮 ͵, ̻
ÿ ĸ ϴ Դϴ. Ǯ⵵ մϴ. ̰  ۵ϴ :
>>> n = tuple(range(1,6))
>>> a1, a2, a3, a4, a5 = n
>>> print a1, a2, a3, a4, a5
1 2 3 4 5
ذ 쿡, ° ϴ ø n Ҹ ؼ װ a1 a5
ٸ 鿡 Ҵϴ ֽϴ. ̷ Ǯ, ϰ ֵ, Ʈ͵
۵մϴ. Ʈ Ʈ ȣ[] ȿ .  ϴ ָ
ϼ:
>>> l = range(1,4)
>>> [l1, l2, l3] = l
>>> t1, t2, t3 = tuple(l)
>>> print l1, l2, l3, "\n", t1, t2, t3
1 2 3
1 2 3
ϴ Ǯϰ , Ʈ ִ ݵ ̿ ġؾ Ѵٴ
ϼ. ϱ Ǯ ϳ ִ ȸ մϴ, Ҵ̶ մϴ. ̷
͵ ð 𸨴ϴ, ׷ , ߿ ϰڽϴ:
>>> a, b = 0, 1
>>> a
0
>>> b
1
, a b ο ٸ Ҵ޽ϴ! ϰ, մϴ. , ̰
(Intermediate) ̹Ƿ, ϰڽϴ.(׷ ణ մϴ). :
0 1 "ӽ" ÿ Ǿϴ. װ t θ δ ̸
ϴ. . a b, ĸ-иǾǷ, Ǯ ޾ Դϴ.
tԴϴ. Ǯ , t ù ° Ҵ a  ° b ϴ.
! Ҵ Դϴ.
ֻ
ڿ ǥȭ
Ž ö 𼱰 ڿ a[1:] ǥȭ ϳ ? , װ ǥȭ
Դϴ. ǥȭ ڿ (Ǵ Ʈ, , ׷ ڿ
մϴ) ̻ Ҹ , (׷Ƿ ̸) ֽϴ.
ڸ ϼ, ǥ ǥ, ȣ ȿ ϼ. 캸:
>>> s = 'supercalifragalisticexpialidotious'
>>> s[0:5]
'super'
, װ ʽϴ! s 5 Ҵ 'c'Դϴ, 'r' ƴϿ! , ߽ϴ.
° ڴ ϴ ū ǥ Ůϴ. (range() Ͻó? ٷ ׿ ϴ.) ׷
ٷ ž ʿ䰡 ̶, մϴ.
, ־ ϱ? ű⿡ ° ǥ ϴ, ? Ȯմϴ.
: հ ڿ ⺻ ǥ ֽϴ. ݷ ⺻ 0̰, ڿ ⺻ len(s)̰ų,Ǵ
ڿ Դϴ:
>>> s = 'supercalifragalisticexpialidotious'
>>> s[:5]
'super'
>>> s[27:]
'dotious'
s 27°  dotious ߸ Ѵٴ ϰ Դϴ.
ϰ ڸ Ѵٰ ô. ǥ ڵ ۵Ѵٰ ﳪ? ,
⿡ װ ۵մϴ. ǥ ǥ տ ͸ ȮϽø ˴ϴ ( ٸ
Ͻð Դϴ):
>>> s = 'supercalifragalisticexpialidotious'
>>> s[-7:]
'dotious'
>>> s[int(-.5*len(s)):len(s)-5] #ǥ ǥ ֽϴ
'ticexpialido'
>>> s[:] #ݷи ִ Ͱ մϴ
'supercalifragalisticexpialidotious'
>>> s[:10]+s[10:] #As a rule of thumb, s[:n]+s[n:]=s
'supercalifragalisticexpialidotious'
>>> s[-5:5]
''
ǥ ġ  Ͼ ذ ǽʴϱ? ƹ ڿ ϴ. ̺, װ
ϴ, ׷ ѹٴ ƴմϴ. ׷, ü ǥȭ ġ ִ
˾ ? , װ ¥ ϴٰ մϴ. װ п, 
⸷ ( ͵ ) ڿ ̾ ֽϴ. -
:
>>> #ΰ ̸ ȥմϴ. ̰ ϰ ִµ,
... #ù ° ̸ ִ ڿ ° ̸ ɴϴ.
... name1 = raw_input( "Type a name: " )
Type a name: Dave
>>> name2 = raw_input( "Type another name: " )
Type another name: Guido
>>> print name1[:3]+name2[-3:]
Davido
, ̱̾ A⿡ Ͽ ǿ 뵵 ã ̶ Ȯմϴ, ׷
, п װ  ۵ϴ մϴ, ׷ ʳ?
ֻ
/
ýۿ ִ Ͽ ϴ α׷   ڽϱ? ¥ 𸣰,
̽ ׷ ϴ. , ׷  ϴ ñ Դϴ. ⺻,
ʿ䰡 ְ, װͿ ü Ҵ ʿ䰡 ֽϴ. ü? ׷ ͵鿡
, ׷? ü C ü ( ϰԴ Ŭ) ϸ, ٸ   ڵ
մϴ. ⺻ װ Ÿ ̸ (׸  쿡 Ư) Լ Ͽ ٸ Ÿ
Ǿ ˴ϴ. ڵ( ϴ ) , , ü ϴ.
open Լ Ͽ ڵ, , Ҵ ֽϴ:
>>> f = open( "myfile.txt", "r" )
>>> f #̰ Դϴ
<open file 'myfile.txt', mode 'r' at 0x8122338>
myfile.txt ˰ ø մϴ (Ʈ: ). "r" κ ϱ
Դϴ. ̽ Ϸ Ÿ о ̷ ϴ, Ͽ Ÿ
ϴ ֽϴ. ⿡ ִ ֽϴ:
r - Reading б
w - Writing
a - Appending ߰ ( , ο Ÿ )
r+ - Reading and writing б
μ - Reading б
̽ ̷ ͵  带 ̶
ϼ. ׷, ߿ ġ ϵ ɼ ϼ. ƿ
, "b" ִµ, ߿ϱ , ణ ȥϴ. newlines Ͽ ڵ
ڷ մϴ. ٸ δ, , newlines Ͽ Ÿ ڸų Ȥ
ã ֽϴ. ̷ newline- ޽ ù ° readlineԴϴ. ü readline ޽
忡 Ϸ, ü ̸ ڿ 'readline()' . ̰ Ͽ ִ
ڿ ȯմϴ. readlines 밡ѵ, ̰ ϳ Ʈ о Դϴ.
readlines μ ִµ Ϸ о ִ Ʈ , Դ
ϱ ʿ ̶ ֽϴ. ϳ : readline (Ǵ
readlines) ٴٸ ڿ '' ȯմϴ. , Դϴ:
>>> f.readlines() #츮 ϴ ; Ͻô´ 弼
['This is the first line\012', 'This is the second line\012', "Hmm I'm running out
of creative things to say\012", 'Alright, this is the last line']
>>> f.seek(0) #̰ ó ǵ ʿ䰡 ֽϴ; Ʒ
>>> f.readline()
'This is the first line\012'
ظ Ͻðڴٸ, ڿ ִ \012 newlineԴϴ. , ̽ \n
\ ڵ 16 (ƽŰ) ڵ üմϴ. ϰڴٸ, \012 δ \n
ϼ. Ͽ Ͽ ߿ (¼ װ) ޽尡 ֽϴ. ù°, read seek
Դϴ. read ü ϳ ڿ о Դϴ, Ȥ Ͽٸ ִ
Ʈ о Դϴ. seek Ѱ μ ʿ մϴ, װ Ͽ Ʈμ Ȥ Ž
ּԴϴ. ? , ̽ Ʈ ͸ ΰ װ ̹Ƿν нϴ.
Ϸ о , ʹ д κ Դϴ. ٽ ,
κ Դϴ. seek Ͽ ͸ () Ȥ ڷ
մϴ. ⿡ ٸ ֽϴ, ̿մϴ:
>>> f.seek(12) #Ʈ 0 մϴ, ׷Ƿ 12 'f'Դϴ
>>> f.read(10)
'first line'
>>> f.seek(0)
>>> f.read() #ü . Ƹ Ŵ Ͽ ؼ ̷ Ͻø ȵ˴ϴ.
"This is the first line\012This is the second line\012Hmm I'm running out
of creative things to say\012Alright, this is the last line"
׸, , write Լ ֽϴ, װ (Ե!) Ͽ ϴ. ȣӿ ⸦
ϴ ڿ . ׷, Ȯϰ w, r+, Ǵ a ִ Ȯϼ! ,
ο ϱ⸦ ϽŴٸ ݵ 带 w Ǵ a ؾ, r+ Ͻø ȵ˴ϴ.
޽ closeε, ݰ ޸𸮸 ϰ Ǯ ݴϴ. ۾ ų Ȥ
ݴ α׷ Դϴ. Դϴ, ׷
:
>>> f = open( "mynewfile.txt", "w" )
>>> f.write( "This is some text" )
>>> f.close()
>>> f.read() #! ׿ (Ǵ ׷ ̶ б- ϵ
ϴ)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: I/O operation on closed file
>>> f = open( "mynewfile.txt" )
>>> f.read()
'This is some text'
ֻ

ϱ
츮 ̽ ⿡ Ͽ ϱ , ̶ ׸  ű⿡
ϴ Ͽ ô. ũƮμ (Ȥ ϵ ) ٽ ̽κ
ȯ ֽϴ. import ֽϴ, پ
ֽϴ:
>>> import sys #̷ Ͽ 츮 sys Դϴ
>>> sys.argv #ü ϴ Ͱ ̸ մϴ
['']
>>> from sys import argv # ̸ ȣϴ ٸ Դϴ
>>> argv
['']
>>> from sys import * #sys ⿡ ִ ϴ
>>> stdout
<open file '<stdout>', mode 'w' at 0x80d34b0>
ȥ? δ ׷ ʽϴ. İ  ô. ù ° sys ( ϳ)
մϴ. ָ ο 츮 sys , argv (ͷ dz μ), . ()
, ü Ͽ Ͽ ó, ȣ ʿ䰡 ִٴ Դϴ. ̰ ̸- sys ̸(namespace)
ϴ Դϴ, , sys , , ̸ 'sys' Ͽ ٵ ֽϴ. ٸ
δ, 츮 'from <module> import <members>' ϸ, 츮 ̸ ϴ
Դϴ. ׷ ޽ ٸ  Ȥ ⺻ Լ ó ֽϴ.
ü ̸ ϰ ø, 'from <module> import *' ϼ.
, ׷?
ֻ

̽, ٴ μ, ⺻ Ͽϴ. ϴٴ ǹ̴:
, ̽ 2.0 ( Ȱ͵ OS- Ͽ) 196 밡ϴ
Դϴ. "(builtin),"̶ ǹ̴ װ͵ ʿ䰡 ٴ ϴ ƴ
, ̽ ġ Եȴٴ Դϴ. ׷, ⿡ ټ ϰڽϴ, װ͵
ϴ ⺻ Բ, ణ ҵ ڽϴ.
sys - ⺻ ý/α׷ Լ
m argv - Ϳ dz ɾ Ʈ
m stdout, stdin, stderr - ⺻ ǥ , ǥ Է, ׸ ǥ . ̷ ͵
ó ֽϴ.
m exit - α׷ ϰ ϸ, ڵ ϳ մϴ (⺻ 0=
, non-0=)
m path - ̽ ϱ ؼ Ž ãƺ
math - Լ . ⿡ ͵ ʰڽϴ, ׷ math
Լ ־ sin, acos, tanh, log, ֽϴ. ⿡ ֽϴ:
m pi - . μ, 뷫 3.1415926535897931 Դϴ.
m e - ڿ (ln) ؼ. 0->Ѵ k Ͽ 1/k! ظ . ̻
Ե, (׸ Ѵ) math ⿡ ԵǾ ʽϴ.
string - ڿ ٷ Լ m printable - ̸- ° ڵ ڿ. , ȣ (빮ڿ ҹ), ,
׸ 밡մϴ.
m atoi, atof, atol - ڿ , Ǽ, ׸ ȯմϴ. ̽ 2.0
Լ int, float, ׸ long ؾ մϴ.
m find - ° ڿ (μ) ù ° ڿ Ÿ ǥ ߰Ѵ.
m count - ù ° ڿ ° ڿ Ÿ 󵵸 .
m split - ù ° μ ־ ڿ ڷ ɰ; Ʈ ȯѴ. ° μ
, ڿ ſ μ ɰ.
m strip - ־ ڿ ׸ Ĺ Ѵ.
m replace - ù ° ڿ ° ڿ ° ڿ üѴ. , ̷
ϼ: replace( str, "old", "new" ) str "old" "new" üѴ.
random
m seed - ⿡ μ ű; ⺻ ð
m random - 0 1 εҼ ȯѴ.
m randint - ־ ̿ ִ ȯѴ.
m uniform - randint , εҼ͸ ۵Ѵ.
m choice - Ʈ Ȥ ÷κ Ҹ Ѵ.
time - ð ð ϰ ȹϴ Լ. ̽ ̺귯
.
m time - μ ϴ, ý ð ... ð ķ, ʴ Ÿ ڸ
ȯմϴ. δ ؼ ̴, ű ϰ,
.
m localtime - ؼ. ð ־ (time Լ ȯϴ ó), װ
ȯѴ: year (four-digit), month (1-12), day (1-31), hour (0-23),
minute (0-59), second (0-61 - 60 & 61 ʸ ̸, ʴ´),
weekday (0-6, 0̴), day (1-366), ϱ ð (0 - no, 1 - yes, -1 - ý
). մϴ :)
m gmtime - , ý ð ƴ϶, ׸ġ Mean Time̶
.
m asctime - localtime Ǵ gmtime ־, 'Thu Mar 22 18:24:35 2001'
ȯѴ.
re - ǥ (regexp) . ⿡ װ͵ ٷ ʰڽϴ, ׷ ҵ
̽㿡 Ѵٴ ƽ ̶ մϴ. ̽ regexp Ȯϰ Ư̼ ֽϴ,
׷Ƿ о ... ģԴϴ :).
ֻ
- Լ
, ڽ ٸ ̷ ΰ ҿ ְڽϱ? , -
.py Ϸμ ̽ 丮 ϳ ֽϴ. ϸ, ڵ,
Լ, , Ŭ, ԵǾ ɴϴ. ٸ ϴ Ͱ 
ֽϴ. , ׷, Ǹϰ Ǿϴ, ׷ ̷ κ ԼԴ
. ׷, ڽŸ Լ DZ? ϴ.
ϴ. 츮 Լ մϴ. ϹǷ, 츮 math ⿡ ִ log Լ ̿Ͽ
ؼ α׸ Դϴ: >>> def logb( b, n ):
... from math import log
... a = log(n)/log(b)
... if a - int(a) == 0: #a Դϴ
... return int(a)
... else:
... return a
...
󸶳 . б Ͻ ʾ , ణ ʿ Դϴ (׷ ȭ
... ܿ ԻԴϴ :). 'def' ΰ? , װ Լ ̸ װ ϴ
Դϴ.  μ ּ ڽϴ. ׷ ȯ ֽϴ.
......Լ ȯϴ Դϴ :). , break return ڿ մϴ.
𰡸 ȯ ʴ´ٸ . ϴ. , ...⿡ ,
, 帳ϴ, ̺, ̰ ħ ¾, ׷ ʾ? սô, ̰ moremath.py
:
#!/usr/bin/python
def logb( b, n ): #Definition
from math import log #Need this!
a = log(n)/log(b) #Change of base formula
if a - int(a) == 0: #a is an int
return int(a) #Get rid of that decimal :)
else: #a is a float
return a #Just return it
#Ye Olde Golden Ratio <www.verbose.net>
phi = 1.6180339887498948
Ϳ:
>>> import moremath
>>> moremath.phi #εҼ ׷ ʽϴ, Ͻôٽ
1.6180339887499999
>>> from moremath import logb
>>> logb(2,1024)
10
Ϳ! Դϴ! ٸ Դϴ! ׷ ̽ϴ! Ǵ
½ϴ....Ǵ...«... ̽ϴ. moremath.py
丮 鿩 ø, moremath.pyc ߰ ֽϴ. ̰'(compiled)' Դϴ,
װ ƴϰ (Ʈ ڵμ - ڹ .class ϰ Ͽ), .py
޸ δ ϴ. ׷, ƴ .pyc ̽ļ ϴ, ׷
ڽ ؼ ϰ Ѵٸ .pyc ϰ Ѵٸ, ǰϰǵ .py
ϼ.  , .py Ȯ ҽ ֽϴ.
:)?
ֻ

̽ ޺
մϴ: ̽ ޺ ƴ ֽϴ. , װ ٸϴ. κп ̽
ϴ. ׸ װ и ϴ, ׸ 캻, Ȥ , װ ٷ
ѰԴϴ. ڽϴ.
. ġ, ҸȮ ڵ ſ, ̽ ϴ ణ, ()
鿩 մϴ.
-ؼ. Ʈ (slicing), ϱ(packing), . - Ÿ Ͽ
ֹǷ Ϳ ϰ ġ ͵ ʿ ϴ...񸸿...װ CԴϴ... ȿ
̱ , δ ?erhacker 򰥸 ϰ մϴ. ׷ װ ޺ٴ ̽㿡
ϴ.
յ ü- (OO) . ޿ OO Ŭ ͵ ؽ ϴ ۾
Ǿ ֽϴ. ʿ, ̽ 00 ǥ Ǿϴ...׷ Ŭ Ͽ
ʾҽϴ. ˼մϴ.
Ǹ C . , ̰ ⿡ ŸԴϴ, ׷ ̽ ޺ٴ C
ִٰ մϴ... ?
ȣȭ . Ϸ ũƮ ʿ䰡 ϴ. ϴ ٸ Ͻ ̴ϴ.
Ÿ . 迭, ؽ, ׸ Į ϴ. ̽ Į(, Ǽ,
), Ʈ, ( ʾҽϴ; ؽ Ȥ 迭 մϴ), ϴ. ׸
̽ Ȯ强 , ȭմϴ.
range Լ. Ͱ , Ѱ for ȸ̰ ٰ մϴ. range߸ ¥
for ȸ̸ ϴ ̸... ٸ ȸ̸ ʿ䰡 ϴ. 浹δ㵵
. ׸ range ٸ 뵵ε ֽϴ.
Ƽ ̽. 'Nuff .
ֻ

Python.org. -.
̽ 翬 о.
Zope. ̽ ۼ .
α׷ õ ִ ̽ . ̿ Ǹ .
Black Sun Research Facility. Ʈũ, α׷, ũ, ü, û Ʈ. ħ
ű⿡ ߰Ǿ մϴ :)
Pythonline. Ƽ ̽, Ʈ ƴ, Ȯ մϴ.
 , , Ī, , , ϰ ϼ Ǵ ޽ BSRF
޽ 忡 ּ. ȸμ, մϴ. ϴ, ׷ δٴ
մϴ.
, ⳪ , ḻ ߽ϴ. 𰡸 ⸦ ٶ, ʹ Ƶ巹 к
ݷϰ ڵ ʱ⸦ ٶϴ. ̷ Ⱑ մϴ, ׷ ...̸...⼭...߰ڽ
ϴ.
ֻ

  Hit : 16467     Date : 2008/12/18 05:00



    
״ ݱ ̽ Ÿ ۿ ... 2009/01/08  
' '; ^^; 2009/01/16  
1501   ı ľϱ      asd2862
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1485   [1]̷ & 輺[5]     Ŀ
12/02 7223
1484   FTP ̿ ( ̰...ƴҼ..)[4]     Ŀ
11/30 7569
1483   [2]̷ Ư¡[5]     Ŀ
12/10 8378
1482   bof & fsb ũƮ[5]     awsedr45
03/11 11616
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