私は Mark Lutz のProgramming Python 3rd editionを読んでいますが、質問に困惑しています:type('something')
常に空の文字列になります。
誰かが親切にこれを説明できますか?
コンテキスト情報:
スクリプトに 1 行追加します$CODEROOT\pp3e\Internet\Web\cgi-bin\tutor0.py
#!/usr/bin/python
#######################################################
# runs on the server, prints html to create a new page;
# url=http://localhost/cgi-bin/tutor0.py
#######################################################
print "Content-type: text/html\n"
print "<TITLE>CGI 101</TITLE>"
print "<H1>A First CGI script</H1>"
print '<p>[%s]'%type('apple') # ★ I add this line
print "<P>Hello, CGI World!</P>"
追加された行は、ブラウザ[<type 'str'>]
で見たいのですが、実際には が表示されます[]
。
HTTP サーバーを起動するための Python は次の場所にあります。$CODEROOT\pp3e\Internet\Web\webserver.py
#########################################################################
# implement HTTP web server in Python which knows how to serve HTML
# pages and run server side CGI scripts; serves files/scripts from
# the current working dir and port 80, unless command-line args;
# python scripts must be stored in webdir\cgi-bin or webdir\htbin;
# more than one of these may be running on the same machine to serve
# from different directories, as long as they listen on different ports;
#########################################################################
webdir = '.' # where your html files and cgi-bin script directory live
port = 80 # http://servername/ if 80, else use http://servername:xxxx/
import os, sys
from BaseHTTPServer import HTTPServer
from CGIHTTPServer import CGIHTTPRequestHandler
if len(sys.argv) > 1: webdir = sys.argv[1] # command-line args
if len(sys.argv) > 2: port = int(sys.argv[2]) # else dafault ., 80
print 'webdir "%s", port %s' % (webdir, port)
# hack for Windows: os.environ not propogated
# to subprocess by os.popen2, force in-process
if sys.platform[:3] == 'win':
CGIHTTPRequestHandler.have_popen2 = False
CGIHTTPRequestHandler.have_popen3 = False # emulate path after fork
sys.path.append('cgi-bin') # else only adds my dir
os.chdir(webdir) # run in html root dir
srvraddr = ("", port) # my hostname, portnumber
srvrobj = HTTPServer(srvraddr, CGIHTTPRequestHandler)
srvrobj.serve_forever() # serve clients till exit
私の環境:
- パイソン 2.7
- ウィンドウズ 7 x64