Twitter の JSON をテキストに変換
検索結果の json をテキストに変換した. きっとまた使うので残しておく.
import json from glob import glob from datetime import datetime, timedelta txtconv_table = { '<': '<', '>': '>', '"': '"', '\r': '', '\n': ' ' } def dtconv(s): return (datetime.strptime(s, '%a, %d %b %Y %H:%M:%S +0000') + timedelta(hours = 9)).strftime('%Y-%m-%d %H:%M') def txtconv(s): for k in txtconv_table: s = s.replace(k, txtconv_table[k]) return s.replace('&', '&') result = [] for filename in glob('search*.json'): with open(filename) as f: result += ['%s (@%s) %s' % (dtconv(t['created_at']), t['from_user'], txtconv(t['text'])) for t in json.load(f)['results']] print '\n'.join(sorted(result)).encode('utf-8')
無理やり with 対応
追記: contextlib.closing を使えばよかったのこと(^^;
GzipFile が標準ライブラリのくせに with に対応していなくてカッとなってやった. つか、close メソッド呼べばいいだけのクラスって多いと思うんだけど・・・.
import gzip from new import instancemethod def with_support(obj): obj.__enter__ = instancemethod(lambda self: self, obj, obj.__class__) obj.__exit__ = instancemethod(lambda self, type, value, traceback: self.close(), obj, obj.__class__) return obj with with_support(gzip.open('hello.txt.gz', 'w')) as f: f.write('Hello World!')
って、Python 2.6 のマニュアルに new は deprecated だから types を使えーと書いてあるではないか. じゃあ、ということで.
import gzip from types import MethodType def with_support(obj): obj.__enter__ = MethodType(lambda self: self, obj, obj.__class__) obj.__exit__ = MethodType(lambda self, type, value, traceback: self.close(), obj, obj.__class__) return obj with with_support(gzip.open('hello.txt.gz', 'w')) as f: f.write('Hello World!')
Python で png 画像を自力で生成する(パレット編)
特に何かが難しかったりするわけでもないですが.
from sys import stdout from struct import pack from zlib import crc32, compress def chunk(type, data): return pack('!I4s%dsi' % len(data), len(data), type, data, crc32(type + data)) width, height = 100, 20 depth, color_type = 8, 3 palette_data = pack("%dB" % (width * 3), *sum([[i * 255 / (width - 1), 0, 0] for i in range(width)], [])) img_data = pack("%dB" % (width + 1), *([0] + range(width))) * height stdout.write('\x89PNG\r\n\x1a\n') stdout.write(chunk('IHDR', pack("!IIBBBBB", width, height, depth, color_type, 0, 0, 0))) stdout.write(chunk("PLTE", palette_data)) stdout.write(chunk("IDAT", compress(img_data, 9))) stdout.write(chunk('IEND', ''))
Nimrod で空ウインドウを出してみた
force7.de で、空ウインドウを出してみた.
import
windows
const
NULL = 0
proc wndProc(hWnd: HWND, msg: UINT, wParam: WPARAM, lParam: LPARAM): LRESULT{.stdcall.} =
case msg
of WM_DESTROY:
PostQuitMessage(0)
else:
return DefWindowProc(hWnd, msg, wParam, lParam)
return 0
proc winMain(hinst: HINST, hinstPrev: HINST, lpszCmdLine: LPSTR, nCmdShow: int): int{.stdcall.} =
const
szClassName = "WCN_HELLO_WINDOWS"
var
wndClass: WNDCLASS
hWnd: HWND
msg: MSG
wndClass.style = CS_HREDRAW or CS_VREDRAW
wndClass.lpfnWndProc = wndProc
wndClass.cbClsExtra = 0
wndClass.cbWndExtra = 0
wndClass.hInstance = hInst
wndClass.hIcon = NULL
wndClass.hCursor = LoadCursor(0, IDC_ARROW())
wndClass.hbrBackground = GetStockObject(WHITE_BRUSH)
wndClass.lpszMenuName = nil
wndClass.lpszClassName = szClassName
if RegisterClass(wndClass) == 0:
return 0
hWnd = CreateWindow(
szClassName,
"Hello Windows!",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInst,
nil)
discard ShowWindow(hWnd, nCmdShow)
discard UpdateWindow(hWnd)
while GetMessage(msg, NULL, 0, 0) != 0:
discard TranslateMessage(msg)
discard DispatchMessage(msg)
return msg.wParam
var
hInst: HINST
si: STARTUPINFO
nCmdShow: int
hInst = GetModuleHandle(nil)
si.dwFlags = 0
GetStartupInfo(si)
nCmdShow = if (si.dwFlags and STARTF_USESHOWWINDOW) != 0: int(si.wShowWindow) else: SW_SHOWDEFAULT
discard winMain(hinst, 0, "", nCmdShow)Nimrod 0.8.8 で試したところ、OS ビルトインの DLL にしか依存しない実行ファイルが 96.3KB (strip で 69.0KB) で生成されたので、なかなか良い感じ. が、余りにも情報がなさすぎてアレですw
Python で png 画像を自力で生成する
Ruby で png 画像を自力で生成する - まめめも を Python に移植しただけw
# -*- coding: utf-8 -*- from sys import stdout from struct import pack from zlib import crc32, compress width, height = 100, 20 depth, color_type = 8, 2 # グラデーションのベタデータ line = [[x * 255 / width, 0, 0] for x in range(width)] raw_data = [line] * height # チャンクのバイト列生成関数 def chunk(type, data): return pack('!I4s%dsi' % len(data), len(data), type, data, crc32(type + data)) # ファイルシグニチャ stdout.write('\x89PNG\r\n\x1a\n') # ヘッダ stdout.write(chunk('IHDR', pack("!IIBBBBB", width, height, depth, color_type, 0, 0, 0))) # 画像データ img_data = ''.join(pack("%dB" % (width * 3 + 1), *sum([[0]] + line, [])) for line in raw_data) stdout.write(chunk("IDAT", compress(img_data))) # 終端 stdout.write(chunk('IEND', ''))
* が使える Ruby の pack が羨ましいです＞＜
# -*- coding: utf-8 -*- # http://www.physics.sfasu.edu/astro/color/spectra.html def wavelength_to_rgb(n): if n < 380: rgb = [0.0 , 0.0 , 0.0 ] elif n < 440: rgb = [(440.0 - n) / 60.0, 0.0 , 1.0 ] elif n < 490: rgb = [0.0 , (n - 440.0) / 50.0, 1.0 ] elif n < 510: rgb = [0.0 , 1.0 , (510.0 - n) / 20.0] elif n < 580: rgb = [(n - 510.0) / 70.0, 1.0 , 0.0 ] elif n < 645: rgb = [1.0 , (645 - n) / 65.0 , 0.0 ] elif n < 780: rgb = [1.0 , 0.0 , 0.0 ] else: rgb = [0.0 , 0.0 , 0.0 ] if n < 380: factor = 0.0 elif n < 420: factor = 0.3 + 0.7 * (n - 380.0) / 40.0 elif n < 700: factor = 1.0 elif n < 780: factor = 0.3 + 0.7 * (780.0 - n) / 80.0 else: factor = 0.0 return map(lambda c: 0 if c == 0.0 else 255 * ((c * factor) ** 0.8), rgb) # generate png from sys import stdout from struct import pack from zlib import crc32, compress width, height = 100, 20 depth, color_type = 8, 2 line = map(lambda x: wavelength_to_rgb(380 + x * 400 / width), range(width)) raw_data = [line] * height def chunk(type, data): return pack('!I4s%dsi' % len(data), len(data), type, data, crc32(type + data)) stdout.write('\x89PNG\r\n\x1a\n') stdout.write(chunk('IHDR', pack("!IIBBBBB", width, height, depth, color_type, 0, 0, 0))) img_data = ''.join(pack("%dB" % (width * 3 + 1), *sum([[0]] + line, [])) for line in raw_data) stdout.write(chunk("IDAT", compress(img_data))) stdout.write(chunk('IEND', ''))
さすがに芸が無いかなと思ったので、Sub フィルタを突っ込んでみたw
# -*- coding: utf-8 -*- from sys import stdout from struct import pack from zlib import crc32, compress width, height = 100, 20 depth, color_type = 8, 2 line = [[x * 255 / width, 0, 0] for x in range(width)] # Sub フィルタを適用 for i in range(width - 1, 0, -1): line[i][0] = (line[i][0] - line[i - 1][0] + 255) % 255 raw_data = [line] * height def chunk(type, data): return pack('!I4s%dsi' % len(data), len(data), type, data, crc32(type + data)) stdout.write('\x89PNG\r\n\x1a\n') stdout.write(chunk('IHDR', pack("!IIBBBBB", width, height, depth, color_type, 0, 0, 0))) img_data = ''.join(pack("%dB" % (width * 3 + 1), *sum([[1]] + line, [])) for line in raw_data) stdout.write(chunk("IDAT", compress(img_data))) stdout.write(chunk('IEND', ''))
ffftp.ini パスワードデコーダ
諸事情で書いたので. 入力は標準入力、出力は標準出力.
#!/usr/bin/env python # -*- coding: utf-8 -*- from sys import stdin, stdout def decode(s): result = '' t = [ord(c) for c in s] + [0] i = 0 while i < len(s): rnd = (t[i] >> 4) & 0x3 ch = (t[i] & 0xf) | ((t[i + 1] & 0xf) << 4) ch <<= 8 if (t[i] & 0x1) != 0: i += 1 i += 2 ch >>= rnd ch = (ch & 0xff) | ((ch >> 8) & 0xff) result += chr(ch) return result def main(): for s in stdin: s = s.rstrip('\r\n') if s.startswith('HostAdrs'): stdout.write('\n[%s]\n' % (s.split('=')[1],)) elif s.startswith('UserName'): stdout.write('ID: %s\n' % (s.split('=')[1],)) elif s.startswith('Password'): stdout.write('PW: %s\n' % (decode(s.split('=')[1].replace('\\\\', '\\')),)) if __name__ == "__main__": main()
