title: when I try to install Flask-bcrypt it throws me error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
body: <p>When I try to install flask-bcrypt library for my app it is throwing me this error:</p>
  
  <p>creating build/temp.linux-x86_64-2.7</p>
  
  <pre><code>creating build/temp.linux-x86_64-2.7/bcrypt
  
  x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c bcrypt/bcrypt.c -o build/temp.linux-x86_64-2.7/bcrypt/bcrypt.o
  
  x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c bcrypt/bcrypt_pbkdf.c -o build/temp.linux-x86_64-2.7/bcrypt/bcrypt_pbkdf.o
  
  x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c bcrypt/bcrypt_python.c -o build/temp.linux-x86_64-2.7/bcrypt/bcrypt_python.o
  
  bcrypt/bcrypt_python.c:18:20: fatal error: Python.h: No such file or directory
  
   #include "Python.h"
  ^
  
  compilation terminated.
  
  error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
  </code></pre>
  
  <p>how to solve it??
  -thanks in advance!</p>