我有一个我正在使用Travis-CI的requirements.txt文件。在requirements.txt和setup.py中复制需求似乎很愚蠢,所以我希望在setuptools.setup中传递一个文件句柄给install_requires kwarg。
这可能吗?如果是,我该怎么做呢?
这是我的requirements.txt文件:
guessit>=0.5.2
tvdb_api>=1.8.2
hachoir-metadata>=1.3.3
hachoir-core>=1.3.3
hachoir-parser>=1.3.4
另一个parse_requirements黑客也将环境标记解析为extras_require:
from collections import defaultdict
from pip.req import parse_requirements
requirements = []
extras = defaultdict(list)
for r in parse_requirements('requirements.txt', session='hack'):
if r.markers:
extras[':' + str(r.markers)].append(str(r.req))
else:
requirements.append(str(r.req))
setup(
...,
install_requires=requirements,
extras_require=extras
)
它应该同时支持sdist和binary dist。
正如其他人所说,parse_requirements有几个缺点,所以这不是您在公共项目中应该做的,但对于内部/个人项目可能足够了。
小心parse_requirements行为!
请注意,pip.req。Parse_requirements将把下划线改为破折号。这件事让我生气了几天,后来我才发现。示例演示:
from pip.req import parse_requirements # tested with v.1.4.1
reqs = '''
example_with_underscores
example-with-dashes
'''
with open('requirements.txt', 'w') as f:
f.write(reqs)
req_deps = parse_requirements('requirements.txt')
result = [str(ir.req) for ir in req_deps if ir.req is not None]
print result
生产
['example-with-underscores', 'example-with-dashes']
另一个parse_requirements黑客也将环境标记解析为extras_require:
from collections import defaultdict
from pip.req import parse_requirements
requirements = []
extras = defaultdict(list)
for r in parse_requirements('requirements.txt', session='hack'):
if r.markers:
extras[':' + str(r.markers)].append(str(r.req))
else:
requirements.append(str(r.req))
setup(
...,
install_requires=requirements,
extras_require=extras
)
它应该同时支持sdist和binary dist。
正如其他人所说,parse_requirements有几个缺点,所以这不是您在公共项目中应该做的,但对于内部/个人项目可能足够了。
如果你不想强迫你的用户安装pip,你可以模仿它的行为:
import sys
from os import path as p
try:
from setuptools import setup, find_packages
except ImportError:
from distutils.core import setup, find_packages
def read(filename, parent=None):
parent = (parent or __file__)
try:
with open(p.join(p.dirname(parent), filename)) as f:
return f.read()
except IOError:
return ''
def parse_requirements(filename, parent=None):
parent = (parent or __file__)
filepath = p.join(p.dirname(parent), filename)
content = read(filename, parent)
for line_number, line in enumerate(content.splitlines(), 1):
candidate = line.strip()
if candidate.startswith('-r'):
for item in parse_requirements(candidate[2:].strip(), filepath):
yield item
else:
yield candidate
setup(
...
install_requires=list(parse_requirements('requirements.txt'))
)