few more pep8 errors in script addressed

Author: goudfroo

notebooks/cross_instrument/update_pure_parallel_wcs/update_parallel_wcs.py

@@ -2,6 +2,7 @@
 import sys
 import astropy.io.fits as pyfits
 
+
 def log_comment(LOGFILE, comment, verbose=False, show_date=False, mode='a'):
 
     """
@@ -26,6 +27,7 @@ def log_comment(LOGFILE, comment, verbose=False, show_date=False, mode='a'):
 
     return msg
 
+
 def update_pure_parallel_wcs(file, logfile="pure_parallel_wcs_logfile",
                              fix_vtype='PARALLEL_PURE', verbose=True):
 
@@ -142,6 +144,7 @@ def update_pure_parallel_wcs(file, logfile="pure_parallel_wcs_logfile",
 
     return True
 
+
 if __name__ == "__main__":
 
     if len(sys.argv) < 2: