Building ‘_imagingft’ extension error command ‘cc’ failed with exit status 1

November 3, 2015

This error is due to freetype header missing. _imagingft.c:73:10: fatal error: ‘freetype/fterrors.h’ file not found #include <freetype/fterrors.h> ^ 1 error generated. error: command ‘cc’ failed with exit status 1  First, verify freetype is installed. With brew: brew install freetype If freetype installed, warning message shows: Warning: freetype-2.5.5 already installed Next to fixed the issue, is […]

Screen Shot 2015-11-03 at 11.33.25 AM

Pip Install error: invalid command ‘bdist_wheel’ Mac Os

November 3, 2015

Install the wheel package first: pip install wheel If requirement already satisfied, you will see: Requirement already satisfied (use –upgrade to upgrade) Then, you should update your setuptools: pip install setuptools –upgrade Run again pip install, it should works now!

python validate string allowed only spaces, alphabet and numbers

September 29, 2015

Using pattern matching, this is not hard to achieve. To check that each character matches your requirements Regular expression “^[a-zA-Z0-9_]*$” With spaces checking: “^[a-zA-Z0-9_ ]*$” Code example: if allow_special_char == False: import re if not re.match(“^[a-zA-Z0-9_ ]*$”, gname): print “Invalid” Regular expression refer from reference: