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# Get filename here.fileitem = form['filename']# Test if the file was uploadedif fileitem.filename:# strip leading path from file name to avoid# directory traversal attacksfn = os.path.basename(fileitem.filename)open('/tmp/' + fn, 'wb').write(fileitem.file.read())message = 'The file "' + fn + '" was uploaded successfully'else:message = 'No file was uploaded'print """\Content-Type: text/html\n<html><body><p>%s</p></body></html>""" % (message,)If you are running above script on Unix/Linux, then you would have to take care of replacing file separator asfollows, otherwise on your windows machine above open() statement should work fine.fn = os.path.basename(fileitem.filename.replace("\\", "/" ))How To Raise a "File Download" Dialog Box? Sometimes, it is desired that you want to give option where a user will click a link and it will pop up a "FileDownload" dialogue box to the user instead of displaying actual content. This is very easy and will be achievedthrough HTTP header. This HTTP header will be different from the header mentioned in previous section.For example,if you want make a FileName file downloadable from a given link, then its syntax will be as follows:#!/usr/bin/python# HTTP Headerprint "Content-Type:application/octet-stream; name=\"FileName\"\r\n";print "Content-Disposition: attachment; filename=\"FileName\"\r\n\n";# Actual File Content will go hear.fo = open("foo.txt", "rb")str = fo.read();print str# Close opened filefo.close()Hope you enjoyed this tutorial. If yes, please send me your feedback at: Contact UsTUTORIALS POINT Simply Easy Learning
CHAPTER21Python Database AccessThe Python standard for database interfaces is the Python DB-API. Most Python database interfacesadhere to this standard.You can choose the right database for your application. Python Database API supports a wide range of databaseservers:• GadFly• mSQL• MySQL• PostgreSQL• Microsoft SQL Server 2000• Informix• Interbase• Oracle• SybaseHere is the list of available Python database interfaces: Python Database Interfaces and APIs .You mustdownload a separate DB API module for each database you need to access. For example, if you need to accessan Oracle database as well as a MySQL database, you must download both the Oracle and the MySQL databasemodules.The DB API provides a minimal standard for working with databases using Python structures and syntaxwherever possible. This API includes the following:• Importing the API module.• Acquiring a connection with the database.TUTORIALS POINT Simply Easy Learning
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- Page 369 and 370: Tkinter Widgets Tkinter provides v
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# Get filename here.
fileitem = form['filename']
# Test if the file was uploaded
if fileitem.filename:
# strip leading path from file name to avoid
# directory traversal attacks
fn = os.path.basename(fileitem.filename)
open('/tmp/' + fn, 'wb').write(fileitem.file.read())
message = 'The file "' + fn + '" was uploaded successfully'
else:
message = 'No file was uploaded'
print """\
Content-Type: text/html\n
<html>
<body>
<p>%s</p>
</body>
</html>
""" % (message,)
If you are running above script on Unix/Linux, then you would have to take care of replacing file separator as
follows, otherwise on your windows machine above open() statement should work fine.
fn = os.path.basename(fileitem.filename.replace("\\", "/" ))
How To Raise a "File Download" Dialog Box?
Sometimes, it is desired that you want to give option where a user will click a link and it will pop up a "File
Download" dialogue box to the user instead of displaying actual content. This is very easy and will be achieved
through HTTP header. This HTTP header will be different from the header mentioned in previous section.
For example,if you want make a FileName file downloadable from a given link, then its syntax will be as follows:
#!/usr/bin/python
# HTTP Header
print "Content-Type:application/octet-stream; name=\"FileName\"\r\n";
print "Content-Disposition: attachment; filename=\"FileName\"\r\n\n";
# Actual File Content will go hear.
fo = open("foo.txt", "rb")
str = fo.read();
print str
# Close opened file
fo.close()
Hope you enjoyed this tutorial. If yes, please send me your feedback at: Contact Us
TUTORIALS POINT
Simply Easy Learning
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