python – 语法错误:不是机会
问题:
我尝试在python IDLE中执行以下代码
from __future__ import braces
我收到以下错误:
SyntaxError: not a chance
上述错误是什么意思?
I tried executed the following code in the python IDLEAnd I got the following error:What does the above error mean?
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我尝试在python IDLE中执行以下代码
from __future__ import braces
我收到以下错误:
SyntaxError: not a chance
上述错误是什么意思?
I tried executed the following code in the python IDLEAnd I got the following error:What does the above error mean?
我正在阅读和解析Amazon XML文件,而XML文件显示’,当我尝试打印它时,我收到以下错误:
'ascii' codec can't encode character u'\u2019' in position 16: ordinal not in range(128)
从我到目前为止在线阅读的内容来看,错误来自于XML文件是UTF-8,但Python希望将其作为ASCII编码字符处理。 是否有一种简单的方法可以使错误消失并让我的程序在读取时打印XML?
I’m reading and parsing an Amazon XML file and while the XML file shows a ‘ , when I try to print it I get the following error:From what I’ve read online thus far, the error is coming from the fact that the XML file is in UTF-8, but Python wants to handle it as an ASCII encoded character.Is there a simple way to make the error go away and have my program print the XML as it reads?
我刚刚安装了matplotlib,并尝试运行其中一个示例脚本。 但是我遇到了下面详述的错误。 我究竟做错了什么?
from mpl_toolkits.mplot3d import axes3d
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.gca(projection='3d')
X, Y, Z = axes3d.get_test_data(0.05)
cset = ax.contour(X, Y, Z, 16, extend3d=True)
ax.clabel(cset, fontsize=9, inline=1)
plt.show()
错误是
Traceback (most recent call last):
File "<string>", line 245, in run_nodebug
File "<module1>", line 5, in <module>
File "C:\Python26\lib\site-packages\matplotlib\figure.py", line 945, in gca
return self.add_subplot(111, **kwargs)
File "C:\Python26\lib\site-packages\matplotlib\figure.py", line 677, in add_subplot
projection_class = get_projection_class(projection)
File "C:\Python26\lib\site-packages\matplotlib\projections\__init__.py", line 61, in get_projection_class
raise ValueError("Unknown projection '%s'" % projection)
ValueError: Unknown projection '3d'
I just installed matplotlib and am trying to run one of there example scripts.However I run into the error detailed below.What am I doing wrong?The error is
我正在尝试在新的virtualenv中安装matplotlib。
当我做:
pip install matplotlib
要么
pip install http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.1.0/matplotlib-1.1.0.tar.gz
我收到此错误:
building 'matplotlib._png' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -fPIC - DPY_ARRAY_UNIQUE_SYMBOL=MPL_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/include -I/usr/include -I. -I/home/sam/django-projects/datazone/local/lib/python2.7/site-packages/numpy/core/include -I. -I/usr/include/python2.7 -c src/_png.cpp -o build/temp.linux-x86_64-2.7/src/_png.o
src/_png.cpp:10:20: fatal error: png.h: No such file or directory
compilation terminated.
error: command 'gcc' failed with exit status 1
有人知道发生了什么事吗?
任何帮助非常感谢。
I am trying to install matplotlib in a new virtualenv.When I do:orI get this error:Anyone have an idea what is going on?Any help much appreciated.