作者查詢 / tiefblau
作者 tiefblau 在 PTT [ Python ] 看板的留言(推文), 共278則
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2F→: 又return又finally的 感覺有點矛盾05/23 17:50
1F推: 你要的是ser.write(b'\x55') 吧?05/23 12:27
2F→: b'0x55'是四個byte 你print一下長度就懂了05/23 12:29
3F→: python會把可以用ASCII印出來的直接印成ASCII 所以你串05/23 12:32
4F→: 其實是 b'0x55' == b'\x30\x78\x35\x35'05/23 12:32
9F→: b'U' == b'\x55' == struct.pack('B',0x55) 顯示問題而05/23 17:52
10F→: 已拉 如果跟我一樣常傳binary指令 其實這樣比較好用XD05/23 17:53
1F推: return plus, times, special, div05/05 17:32
3F推: pool 不過queue應該也差不多意思05/03 22:46
4F→: 桌機開一百的話反而反效果 考慮一下機器CPU再去做05/03 22:47
6F推: 那就是我的意思~ 所以你開一百條thread根本沒用 反而還05/04 00:15
7F→: 花成本去開thread~05/04 00:15
1F推: 整頁只有一個table 去裡面抓網址啊04/27 00:59
1F推: 直接從usb洞的序號 拿到port名稱啊04/26 23:35
3F推: 你是用啥系統 以pi為例的話 路徑名稱會是固定 只有最後04/27 00:54
4F→: 名稱不一樣 路徑名稱就是硬體usb的編號 所以只要是插同04/27 00:55
5F→: 個孔 跑的時候再去抓那個路徑下的名稱就好~04/27 00:55
6F→: "/sys/devices/platform"04/27 00:57
1F推: 直接print到檔案 如果是py2 print >> f, i04/26 20:17
2F→: py3: print(i, file=f) 或是執行的時候直接重導向04/26 20:18
5F推: http://codepad.org/iGLsc9qh04/26 20:39
2F推: 最簡單的解法 open(path+'/'+file,'r').04/25 17:20
4F推: 2,3同意樓上 但是1有些許不同04/23 04:38
5F推: coding style文章很多,還可以重構、加註解、寫doc04/22 11:06
18F推: 居然推薦變數用中文... 有點潮 一行真的未必好04/23 04:35