python - import matplotlib.pyplot - fc-list 挂起

Question

我遇到了与 import matplotlib.pyplot hangs 中所述相同的问题更新我的 matplotlib 版本后 import matplotlib.pyplot as plt 在执行 fc-list 时挂起。

然而，the proposed solution对我不起作用；在 ~/.matplotlib 中运行 fc-list 占用 100% CPU，并且在 15 分钟内没有完成。

我有以下配置:

• Mac，运行 OS 10.10.5 (OS X Yosemite)
• python 2.7.5
• matplotlib 1.4.3(是 1.3.1，那个版本没问题)

为了更新我的 matplotlib 版本，我使用了:

sudo pip install matplotlib

如果我现在重新运行这个命令，我会得到

Requirement already satisfied (use --upgrade to upgrade): matplotlib in /Library/Python/2.7/site-packages
Requirement already satisfied (use --upgrade to upgrade): numpy>=1.6 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): pytz in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): pyparsing!=2.0.0,>=1.5.6 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): python-dateutil in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): nose>=0.11.1 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): six>=1.4 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): mock in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): funcsigs in /Library/Python/2.7/site-packages (from mock->matplotlib)
Requirement already satisfied (use --upgrade to upgrade): pbr>=0.11 in /Library/Python/2.7/site-packages (from mock->matplotlib)

和sudo pip install --upgrade matplotlib:

Requirement already up-to-date: matplotlib in /Library/Python/2.7/site-packages
Requirement already up-to-date: numpy>=1.6 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: pytz in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: pyparsing!=2.0.0,>=1.5.6 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: python-dateutil in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: nose>=0.11.1 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: six>=1.4 in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: mock in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already up-to-date: funcsigs in /Library/Python/2.7/site-packages (from mock->matplotlib)
Requirement already up-to-date: pbr>=0.11 in /Library/Python/2.7/site-packages (from mock->matplotlib)

我在 ~/.matplotlib 中有一个 fontList.cache 文件。这个文件是旧的(可以追溯到 2013 年，因此比这次更新尝试更早)。

问题:

1. 尽管有 fontList.cache 文件，我是否应该运行 fc-list，并期望它在某个时刻完成？
2. matplotlib 是否希望在不同的位置找到 fontList.cache 文件？也许我的 matplotlib 安装/更新搞砸了一些路径 - 但是:matplotlib.get_cachedir()返回 /Users/MyName/.matplotlib
3. 文件名改变了吗？我应该重命名 fontList.cache 吗？
4. 我没有 /usr/X11/lin 目录了。但是，fc-list 是否仍会进入无限循环 as suggested ？

Answer 1

发布问题后我无法重现问题。

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我怀疑(重新)运行

sudo pip install matplotlib

和/或

sudo pip install --upgrade matplotlib

在编写问题(以捕获屏幕输出)时修复了之前存在的问题。

fc-list 现在在 2 分钟内完成；尽管它没有创建新的 fontList.cache 文件。

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我现在可以像以前一样调用 import matplotlib.pyplot as plt。