[英]python CGI print function
我有一個非常愚蠢的問題,我嘗試將變量的類型直接打印到瀏覽器,但是瀏覽器跳過了此操作,下面是一個示例:
#!/usr/bin/python
import cgi, cgitb; cgitb.enable()
def print_keyword_args(**kwargs):
# kwargs is a dict of the keyword args passed to the function
for key, value in kwargs.iteritems():
a = type(value)
print "<br>"
print "%s = %s" % (key, value), "<br>"
print "going to print<br>"
print "printing %s" % a, "<br>"
print "printed<br>"
print "<br>"
form = {'a': 1, "v": None, "f": "ll"}
print "Content-type:text/html\r\n\r\n"
print "<html>"
print "<head>"
print "<title>form</title>"
print "</head>"
print "<body>"
print_keyword_args(**form)
print "</body>"
print "</html>"
瀏覽器的響應是:
a = 1
going to print
printing
printed
v = None
going to print
printing
printed
f = ll
going to print
printing
printed
期望的響應是:
a = 1
going to print
printing "int"
printed
v = None
going to print
printing "boolean"
printed
f = ll
going to print
printing "str"
printed
源代碼:
<html>
<head>
<title>locoooo</title>
</head>
<body>
hola
<br>
a = 1 <br>
going to print<br>
printing <type 'int'> <br>
printed<br>
<br>
<br>
v = None <br>
going to print<br>
printing <type 'NoneType'> <br>
printed<br>
<br>
<br>
f = ll <br>
going to print<br>
printing <type 'str'> <br>
printed<br>
<br>
</body>
</html>
我認為問題出在類型輸出的<>中,一種解決方法? 提前致謝。
解:
cgi.escape("printing %s" % a, "<br>")
您的瀏覽器沒有顯示<type 'int'>
括號,因為它認為這是HTML元素:
In [1]: a = type(1)
In [2]: print a
<type 'int'>
In [3]: print "printing %s" % a
printing <type 'int'>
您可以查看頁面的源,您應該在其中查看輸出,或者需要轉義<
和>
括號,例如:
In [4]: import cgi
In [5]: print cgi.escape("printing %s" % a)
printing <type 'int'>
您實際上是在打印類型對象: a = type(value)
,它將打印<type 'int'>
。 瀏覽器會將其作為標記進行處理。 要獲得預期的輸出,請嘗試使用以下命令:
a = type(value).__name__
類型對象具有一個名為__name__
的屬性,該屬性可以存儲類型的字符串值。 例:
>>> # Expected output
>>> type(1).__name__
>>> 'int'
>>> # Unexpected output
>>> type(1)
>>> <type 'int'>
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