pip-ins后的vollib问题

Question

我已按如下方式安装了vollib模块：

[root@E7440 boris]# python -m pip install vollib
Collecting vollib
  Using cached vollib-0.1.5.tar.gz
Requirement already satisfied: lets_be_rational in /usr/lib64/python2.7/site-packages (from vollib)
Requirement already satisfied: simplejson in /usr/lib64/python2.7/site-packages (from vollib)
Requirement already satisfied: numpy in /usr/lib64/python2.7/site-packages (from vollib)
Requirement already satisfied: pandas in /usr/lib/python2.7/site-packages/pandas-0.19.0-py2.7-linux-x86_64.egg (from vollib)
Requirement already satisfied: python-dateutil in /usr/lib/python2.7/site-packages (from pandas->vollib)
Requirement already satisfied: pytz>=2011k in /usr/lib/python2.7/site-packages (from pandas->vollib)
Requirement already satisfied: six>=1.5 in /usr/lib/python2.7/site-packages (from python-dateutil->pandas->vollib)
Installing collected packages: vollib
  Running setup.py install for vollib ... done
Successfully installed vollib-0.1.5

虽然安装看起来很成功，但vollib模块的功能没有如预期的那样：

^{pr2}$

由于某些原因，black_scholes和其他属性（如helper、black和black scholes_merton）丢失或无法访问。在

怎么了？在

[root@E7440 boris]# python -m pip check
No broken requirements found.

没有发现问题。。。在

vollib安装在哪里？在

[root@E7440 boris]# python -m pip show vollib
Name: vollib
Version: 0.1.5
Summary: UNKNOWN
Home-page: http://vollib.org
Author: vollib
Author-email: support@quantycarlo.com
License: MIT
Location: /usr/lib/python2.7/site-packages
Requires: lets-be-rational, simplejson, numpy, pandas

正在检查卷库位置：

[root@E7440 boris]# ll /usr/lib/python2.7/site-packages/vollib* -d
drwxr-xr-x. 7 root root 4096 Nov  5 17:16 /usr/lib/python2.7/site-packages/vollib
drwxr-xr-x. 2 root root 4096 Nov  5 17:16 /usr/lib/python2.7/site-packages/vollib-0.1.5-py2.7.egg-info
[root@E7440 boris]# tree /usr/lib/python2.7/site-packages/vollib
/usr/lib/python2.7/site-packages/vollib
├── black
│   ├── greeks
│   │   ├── analytical.py
│   │   ├── analytical.pyc
│   │   ├── __init__.py
│   │   ├── __init__.pyc
│   │   ├── numerical.py
│   │   └── numerical.pyc
│   ├── implied_volatility.py
│   ├── implied_volatility.pyc
│   ├── __init__.py
│   └── __init__.pyc
├── black_scholes
│   ├── greeks
│   │   ├── analytical.py
│   │   ├── analytical.pyc
│   │   ├── __init__.py
│   │   ├── __init__.pyc
│   │   ├── numerical.py
│   │   └── numerical.pyc
│   ├── implied_volatility.py
│   ├── implied_volatility.pyc
│   ├── __init__.py
│   └── __init__.pyc
├── black_scholes_merton
│   ├── greeks
│   │   ├── analytical.py
│   │   ├── analytical.pyc
│   │   ├── __init__.py
│   │   ├── __init__.pyc
│   │   ├── numerical.py
│   │   └── numerical.pyc
│   ├── implied_volatility.py
│   ├── implied_volatility.pyc
│   ├── __init__.py
│   └── __init__.pyc
├── helper
│   ├── __init__.py
│   ├── __init__.pyc
│   ├── numerical_greeks.py
│   └── numerical_greeks.pyc
├── __init__.py
├── __init__.pyc
└── tests
    ├── __init__.py
    ├── __init__.pyc
    ├── test_black_scholes_greeks.py
    ├── test_black_scholes_greeks.pyc
    ├── test_black_scholes.py
    ├── test_black_scholes.pyc
    ├── test_data.json
    ├── test_utils.py
    └── test_utils.pyc

8 directories, 45 files

模块文件似乎是呈现的。。。在

检查所需模块：

[root@E7440 boris]# python -m pip list
DEPRECATION: The default format will switch to columns in the future. You can use --format=legacy (or define a list_format in your pip.conf) to disable this warning.
apicaro (1.0)
arandr (0.1.9)
astroid (1.3.6)
Babel (1.3)
backports.ssl-match-hostname (3.5.0.1)
blivet (1.12.8)
cffi (1.4.2)
chardet (2.2.1)
Cheetah (2.4.4)
coverage (4.0.3)
cryptography (1.2.1)
cssselect (0.9.1)
Cython (0.23.4)
decorator (4.0.10)
dnf-langpacks (0.15.1)
docutils (0.12)
enum (0.4.4)
enum34 (1.0.4)
ethtool (0.11)
frescobaldi (2.19.0)
funcsigs (1.0.2)
gresistor (0.0.1)
gwebsockets (0.4)
humanize (0.5.1)
idna (2.0)
iniparse (0.4)
ipaddress (1.0.7)
IPy (0.81)
iwlib (1.2)
Jinja2 (2.8)
kitchen (1.2.1)
laditools (1.0.1)
langtable (0.0.34)
lets-be-rational (1.0.9)
logilab-common (0.63.2)
lxml (3.4.4)
MarkupSafe (0.23)
matplotlib (1.4.3)
meld (3.14.0)
mercurial (3.5.2)
mibian (0.1.3)
mock (2.0.0)
mutagen (1.29)
myhdl (0.8.1)
ndg-httpsclient (0.4.0)
nose (1.3.7)
ntplib (0.3.3)
numpy (1.9.2)
pandas (0.19.0)
pbr (1.10.0)
pdfshuffler (0.6.0)
pexpect (4.0.1)
Phatch (0.2.7)
Pillow (3.0.0)
pip (9.0.0)
ply (3.6)
progress (1.2)
protobuf (2.6.1)
ptyprocess (0.5.1)
pwquality (1.3.0)
pyalsa (1.0.29)
pyasn1 (0.1.8)
pyasn1-modules (0.0.6)
pycparser (2.14)
pycurl (7.19.5.1)
pyflakes (1.0.0)
PyGithub (1.25.2)
Pygments (2.1.3)
pygobject (3.18.2)
pygpgme (0.3)
pyinotify (0.9.6)
pykickstart (2.13)
pyliblo (0.9.1)
pyliblzma (0.5.3)
pylint (1.4.3)
PyOpenGL (3.1.0)
PyOpenGL-accelerate (3.1.0)
pyOpenSSL (0.15.1)
pyparsing (2.1.5)
pyparted (3.10.7)
pyPdf (1.13)
pypoppler (0.12.2)
pyserial (3.1.1)
PySocks (1.5.6)
python-augeas (0.5.0)
python-dateutil (2.4.2)
python-dmidecode (3.12.2)
python-ldap (2.4.17)
python-ly (0.9.4)
python-meh (0.43)
python-nss (0.16.0)
python-poppler-qt4 (0.18.1)
python-systemd (231)
pytz (2015.4)
pyudev (0.21.0)
pyusb (1.0.0)
pyxattr (0.5.3)
PyXB (1.2.4)
pyxdg (0.25)
PyYAML (3.11)
reportlab (3.3.0)
requests (2.10.0)
rope (0.10.2)
rpm-python (4.13.0rc1)
scdate (1.10.9)
scipy (0.14.1)
setuptools (18.0.1)
simplejson (3.5.3)
six (1.9.0)
slip (0.6.4)
slip.dbus (0.6.4)
Sphinx (1.2.3)
spyder (2.3.8)
SSSDConfig (1.14.1)
tepache (1.2)
uniconvertor (2.0)
Unidecode (0.4.16)
urlgrabber (3.10.1)
urllib3 (1.15.1)
vollib (0.1.5)
wxPython (3.0.2.0)
wxPython-common (3.0.2.0)
yum-langpacks (0.4.5)
yum-metadata-parser (1.1.4)

所有的东西都在那里，vollib（0.1.5），lets be rational（1.0.9），simplejson（3.5.3），numpy（1.9.2）和pandas（0.19.0）都在列表中。。。在

我不明白vollib有什么问题。 有人能帮我安装这个软件包吗？在

Answer 1

首先，black_scholes不包含在^{} file of ^{} package中，因此您不能仅import vollib。第二个black_scholes是一个不可调用的模块。正确用法：

^{1}$