34c39cc0_n_fopen_in_Python___Php2Python_e_modes_for_fopen___using_mode_Description
[mode] 'x' [Description] 
Create and open for writing only; place the file pointer at the beginning of the file. If the file already exists, the fopen() call will fail by returning FALSE and generating an error of level E_WARNING. If the file does not exist, attempt to create it. This is equivalent to specifying O_EXCL|O_CREAT flags for the underlying open(2) system call.
PHP function.fopen in Python - Php2Python
Description