我在Windows 10 Pro上导入matplotlib.pyplot时遇到了ImportError
以下是完整错误：
Traceback (most recent call last):
File "C:\Users\****\Dropbox\Code\Python\lib_test.py", line 1, in <module>
import matplotlib.pyplot as plt
File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\pyplot.py", line 31, in <module>
import matplotlib.colorbar
File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\colorbar.py", line 32, in <module>
import matplotlib.artist as martist
File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\artist.py", line 16, in <module>
from .path import Path
File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\path.py", line 21, in <module>
from . import _path, rcParams
ImportError: cannot import name '_path'
这是脚本：
import matplotlib.pyplot as plt
squares = [1, 4, 9, 16, 25]
plt.plot(squares)
plt.show()
如果有人能帮助我，非常感谢。
答案 0 :(得分：0)
Dunno什么是mpip，或者为什么，试试普通的老pip（或者在你的情况下也许是pip3？这可能更多地与基础Python的安装方式有关，为什么我建议使用Anaconda来安装所有（它也自动安装MPL ..）
答案 1 :(得分：0)
这可能是与matplotlib版本有关的问题。我遇到了同样的问题，并解决了该问题，并卸载了现有版本的matplotlib（在我的情况下，使用 conda ，但命令类似于替换 pip 到 conda ），这样： 首先使用以下方法进行卸载：
$encodings = array(
"UCS-4",
"UCS-4BE",
"UCS-4LE",
"UCS-2",
"UCS-2BE",
"UCS-2LE",
"UTF-32",
"UTF-32BE",
"UTF-32LE",
"UTF-16",
"UTF-16BE",
"UTF-16LE",
"UTF-7",
"UTF7-IMAP",
"UTF-8",
"ASCII",
"EUC-JP",
"SJIS",
"eucJP-win",
"SJIS-win",
"ISO-2022-JP",
"ISO-2022-JP-MS",
"CP932",
"CP51932",
"SJIS-mac",
"SJIS-Mobile#DOCOMO",
"SJIS-Mobile#KDDI",
"SJIS-Mobile#SOFTBANK",
"UTF-8-Mobile#DOCOMO",
"UTF-8-Mobile#KDDI-A",
"UTF-8-Mobile#KDDI-B",
"UTF-8-Mobile#SOFTBANK",
"ISO-2022-JP-MOBILE#KDDI",
"JIS",
"JIS-ms",
"CP50220",
"CP50220raw",
"CP50221",
"CP50222",
"ISO-8859-1",
"ISO-8859-2",
"ISO-8859-3",
"ISO-8859-4",
"ISO-8859-5",
"ISO-8859-6",
"ISO-8859-7",
"ISO-8859-8",
"ISO-8859-9",
"ISO-8859-10",
"ISO-8859-13",
"ISO-8859-14",
"ISO-8859-15",
"ISO-8859-16",
"byte2be",
"byte2le",
"byte4be",
"byte4le",
"BASE64",
"HTML-ENTITIES",
"7bit",
"8bit",
"EUC-CN",
"CP936",
"GB18030",
"HZ",
"EUC-TW",
"CP950",
"BIG-5",
"EUC-KR",
"UHC",
"ISO-2022-KR",
"Windows-1251",
"Windows-1252",
"CP866",
"KOI8-R",
"KOI8-U",
"ArmSCII-8"
);
$show_wrong_encodings = false;
$internal_encoding = "UTF-8";
mb_internal_encoding($internal_encoding);
$languages = array(
// name of the language => hex in UTF-8 and timestamp to check
"german" => array("4dc3a4727a", 1520343439), // march
"french" => array("64c3a963656d627265", 1544103703), // december
"polish" => array("677275647a6965c584", 1544103703), // december
"turkish" => array("4172616cc4b16b", 1544103703), // december
"hungarian" => array("6fc5be756a616b", 1520343439), // march
"chinese" => array("e58d81e4ba8ce69c88", 1544103703), // december
"russian" => array("d0b4d095d099d0aed090d09fd0ad", 1544103703) // december
);
$format = "%B"; // print full month name
print("<h1>Detecting the font encoding of <code>strftime()</code></h1>\n");
foreach($languages as $language => $data){
// the hex value in UTF-8, this is the target value
$hex = $data[0];
// the timestamp to check
$timestamp = $data[1];
print(
"<h2>".$language."</h2>\n".
"<p>".
"<code>strftime()</code> for ".formatTime("%B", "english", $timestamp)." ".
"for language ".$language.". Expected hex: <code>".$hex."</code>, converted expected ".
"hex to string: <code>".tostring($hex)."</code>".
"</p>\n"
);
// this is a different formatTime() function than mentioned above, it is defined after this
// foreach
$string = formatTime("%B", $language, $timestamp);
print("<table>\n");
print("<tr>\n".
"\t<td>initial return value</td>\n".
"\t<td>".$string."</td>\n".
"\t<td>".tohex($string)."</td>\n".
"</tr>\n\n".
"<tr><td colspan='3'>Encodings that deliver the correct result:</td></tr>"
);
foreach($encodings as $source_encoding){
$converted = mb_convert_encoding($string, $internal_encoding, $source_encoding);
$converted_hex = tohex($converted);
$style = "";
if($converted_hex == $hex){
$style = "background: green";
}
elseif(!$show_wrong_encodings){
$style = "display: none";
}
print("<tr style='".$style.";'>\n".
"\t<td>".$source_encoding."</td>\n".
"\t<td>".$converted."</td>\n".
"\t<td>".$converted_hex."</td>\n".
"</tr>\n"
);
}
print("</table>");
}
function tohex($string){
return implode(unpack("H*", $string));
}
function tostring($hex){
return pack("H*", $hex);
}
function formatTime($format, $language, $timestamp){
switch($language){
case 'chinese':
$locale = setlocale(LC_TIME, 'zh_CN.utf8', 'zh_CN.UTF-8', 'zh_CN', 'zh');
break;
case 'hungarian':
$locale = setlocale(LC_TIME, 'hu_HU.utf8', 'hu_HU.UTF-8', 'hu_HU', 'hr');
break;
case 'russian':
$locale = setlocale(LC_TIME, 'ru_RU.utf8', 'ru_RU.UTF-8', 'ru_RU', 'ru');
break;
case 'german':
$locale = setlocale(LC_TIME, 'de_DE.utf8', 'de_DE.UTF-8', 'de_DE', 'de');
break;
case 'french':
$locale = setlocale(LC_TIME, 'fr_FR.utf8', 'fr_FR.UTF-8', 'fr_FR', 'fr');
break;
case 'polish':
$locale = setlocale(LC_TIME, 'pl_PL.utf8', 'pl_PL.UTF-8', 'pl_PL', 'pl');
break;
case 'turkish':
$locale = setlocale(LC_TIME, 'tr_TR.utf8', 'tr_TR.UTF-8', 'tr_TR', 'tr');
break;
// ...
default:
$locale = setlocale(LC_TIME, 'en_GB.utf8', 'en_GB.UTF-8', 'en_GB', 'en');
break;
}
$datetime = strftime($format, $timestamp);
setlocale(LC_TIME, $locale);
return $datetime;
}
，并且在成功删除现有版本（我的版本是2.2.2）之后，以下命令安装了一个后续版本，可以在模块名称后使用'=='进行指定：
conda uninstall matplotlib (or pip uninstall matplotlib)
，错误消失。 卸载命令也删除了 seaborn 安装，因此有必要在matplotlib之后安装它，但这很容易... 是的！：）
答案 2 :(得分：0)
由于您可能像我一样，并且做了很多installing/importing，因此在原始matplotlib安装中可能只是个不幸的事，所以请尝试让OL'出去，走走往后踢一脚...
conda uninstall matplotlib
#let it do its thing
conda install matplotlib
#let it do its thing
然后在您要执行的代码上对其进行测试，以查看其是否有效。就我而言，这归结为我的原始安装中的一个"_Path"问题，弄乱了事情。 uninstall/install之后，我很好。