The Bottle does not display Hello World on the web page.

Prerequisites/What you want to achieve

I would like to display "Hello World" on the web page in Bottle.

Problems/Error Messages you are experiencing

仮想 Create a virtual environment
②Install Bottle ③Run the program (described below)
④Launch Server for Bottle Framework Development
⑤Listing on htto://localhost:8000/ and
Entering the URL part into the browser results in an error.

The following error was displayed in the command prompt:

C:\Users\****(real name)\Desktop\yasashiipython\pybotweb\lib\site- 
packages\bottle.py:3468:
Deprecation Warning: Flags not at the start of the expression
US>"(?m)[urbURB]?(?:'((truncated)
Patterns = [re.comple(p%pattern_vars) for pin patterns]
C:\Users\****(real name)\Desktop\yasashiipython\pybotweb\env\lib\site- 
packages\bottle.py:3468:
DeprecationWarning: Flags not at the start of the expression '\\[\\{(?:(?) 
m)[urbURB'(truncated)]
patterns = [re.compile(p&pattern_vars) for pin patterns]
127.0.0.1 - [07/May/2018 22:2625] "GET/HTTP/1.1" 404720
127.0.0.1 - [07/May/2018 22:2625] "GET/favicon.ico HTTP/1.1" 404 742

sys:1 —ResourceWarning:unclosed<socket.socket fd = 360, 
family=AddressFamily.AF_INET,type=Socketkind.SOCK_STREAM,proto=0,laddr= 
('127.0.0.1', 8000)

Error on Browser

Error: 404 Not Found
Sorry, the requested URL 'http://localhost:8080/'caused an error:

Source Codes Affected

from bottle import route, run


@route('/hello')
def hello():
return 'Hello World!'

run(host='localhost', port=8000, debug=True)

Tried

There was another error before this error appeared.
When I looked it up, it was an error that occurred when the machine name was a Japanese string, so
Changed machine name and rebooted as is.Error names are not included.

Attempted host name 8080,8000 but failed.

Supplementary information (for example, FW/Tool Version)

Windows 8.1 64-bit
Python 3.6.5

python bottle

2022-09-30 17:38

1 Answers

If you look at the log, the Bottle is working and the debugger is detecting access to the wrong URL.
127.0.0.1 - [07/May/2018 22:2625] "GET/HTTP/1.1" 404720

Duplicate with teratail answer, but if you write @route('/hello'), you must specify /hello in the URL PATH.
Verify that Hello World! appears at the following URL:

http://localhost:8000/hello

Alternatively, you can view Hello World! in http://localhost:8000/ by rewriting to @route('/') as follows:

from bottle import route, run

@route('/')
def hello():
    return 'Hello World!'

run(host='localhost', port=8000, debug=True)

DeprecationWarning is a warning that code in the Bottle uses the features that you plan to decommission.
Experience has shown that the Bottle itself is still working in my environment.

2022-09-30 17:38

If you have any answers or tips

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