Negation in Python

Question

I m trying to create a directory if the path doesn t exist  but the    not  operator doesn t work  I m not sure how to negate in Python    What s the correct way to do this   if   os path exists   usr share sounds blues             proc   subprocess Popen   mkdir     usr share sounds blues            proc wait

User · Answer

Combining the input from everyone else  use not  no parens  use os mkdir  you d get    special path for john    quot  usr share sounds blues quot  if not os path exists special path for john       os mkdir special path for john

User · Answer

The negation operator in Python is not  Therefore just replace your   with not   For your example  do this   if not os path exists   usr share sounds blues         proc   subprocess Popen   mkdir     usr share sounds blues        proc wait       For your specific example  as Neil said in the comments   you don t have to use the subprocess module  you can simply use os mkdir   to get the result you need  with added exception handling goodness   Example   blues sounds path     usr share sounds blues  if not os path exists blues sounds path       try          os mkdir blues sounds path      except OSError            Handle the case where the directory could not be created

User · Answer

try instead   if not os path exists pathName       do this

User · Answer

Python prefers English keywords to punctuation  Use not x  i e  not os path exists       The same thing goes for  amp  amp  and    which are and and or in Python

[python] Negation in Python

Examples related to python

Examples related to negation