导入错误：在特拉维斯-CI构建

Question

我有上Travis builds进口错误无模块名为config，该错误与瓶中的配置：

from flask import Flask 

app = Flask(__name__) 
app.config.from_object('config') 

在本地机器上，烧瓶应用程序正常运行。但在Travis上这里是错误跟踪

$ nosetests --with-coverage --cover-package=core 
E......................... 
====================================================================== 
ERROR: Failure: ImportStringError (import_string() failed for 'config'. Possible reasons are: 
- missing __init__.py in a package; 
- package or module path not included in sys.path; 
- duplicated package or module name taking precedence in sys.path; 
- missing module, class, function or variable; 
Debugged import: 
- 'config' not found. 
Original exception: 
ImportError: No module named config) 
---------------------------------------------------------------------- 
Traceback (most recent call last): 
    File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/nose/loader.py", line 414, in loadTestsFromName 
addr.filename, addr.module) 
    File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/nose/importer.py", line 47, in importFromPath 
return self.importFromDir(dir_path, fqname) 
    File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/nose/importer.py", line 94, in importFromDir 
mod = load_module(part_fqname, fh, filename, desc) 
    File "/home/travis/build/dzlab/sentimentpy/webapp/app/__init__.py", line 6, in <module> 
app.config.from_object('config') 
    File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/flask/config.py", line 162, in from_object 
obj = import_string(obj) 
    File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/werkzeug/utils.py", line 426, in import_string 
sys.exc_info()[2]) 
    File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/werkzeug/utils.py", line 408, in import_string 
return __import__(import_name) 
ImportStringError: import_string() failed for 'config'. Possible reasons are: 
- missing __init__.py in a package; 
- package or module path not included in sys.path; 
- duplicated package or module name taking precedence in sys.path; 
- missing module, class, function or variable; 

我的配置有什么问题？

Answer 1

import_string只接受绝对模块导入。由于config不是顶级模块，而是webapp的一部分，因此您需要指定webapp.config。见http://flask.pocoo.org/docs/0.10/config/#configuring-from-files：

app = Flask(__name__) 
app.config.from_object('yourapplication.default_settings') 
app.config.from_envvar('YOURAPPLICATION_SETTINGS')