小编And*_*Zhu的帖子

我有点卡在另一个变量上提取一个变量条件的值.例如,以下数据帧:

A  B
p1 1
p1 2
p3 3
p2 4

我怎样才能获得A何时的价值B=3？每当我提取值时A,我得到一个对象,而不是一个字符串.

我如何pip在oh-my-zsh中使用？我试图nltk通过pip 安装,但它告诉我zsh: command not found: pip.当我检查下面的插件时.oh-my-zsh/custom/plugins,有一个名为的文件夹pip.我不知道问题是什么.

编辑:添加 pip

$ echo $PATH
/home/xxx/bin:/usr/local/bin:/home/xxx/bin:/home/xxx/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

$ type pip
pip is an alias for noglob pip

和 nltk

$ echo $PATH
/home/xxx/bin:/usr/local/bin:/home/xxx/bin:/home/xxx/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

$ type pip
pip is an alias for noglob pip

我试图安装hyperopt,但是我收到以下错误:

Collecting hyperopt
Using cached hyperopt-0.0.2.tar.gz
Complete output from command python setup.py egg_info:
DEBUG:root:distribute_setup.py not found, defaulting to system setuptools
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/tmp/pip-build-gmhldfe7/hyperopt/setup.py", line 119, in <module>
    if package_data is None: package_data = find_package_data(packages)
  File "/tmp/pip-build-gmhldfe7/hyperopt/setup.py", line 102, in find_package_data
    for subdir in find_subdirectories(package):
  File "/tmp/pip-build-gmhldfe7/hyperopt/setup.py", line 73, in find_subdirectories
    subdirectories = os.walk(package_to_path(package)).next()[1]
AttributeError: 'generator' object has no attribute 'next'

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 …