topsStack: mergeBursts & s1a_isce_utils: indentation adjustment

Adjust indentations in the following scripts following pep8 style for improved readibility:
+ topsStack/mergegBursts.py
+ topsStack/s1a_isce_utils.py

contrib/stack/topsStack/mergeBursts.py

@@ -5,17 +5,18 @@
 # Heresh Fattahi, updated for stack processing
 
 
-import numpy as np 
 import os
-import isce
-import isceobj
+import glob
 import datetime
 import logging
 import argparse
+import numpy as np
+
+import isce
+import isceobj
 from isceobj.Util.ImageUtil import ImageLib as IML
 from isceobj.Util.decorators import use_api
 import s1a_isce_utils as ut
-import glob
 
 
 def createParser():
@@ -39,20 +40,19 @@ def createParser():
     parser.add_argument('-m', '--method', type=str, dest='method', default='avg',
                         help='Method: top / bot/ avg')
 
-    parser.add_argument('-a', '--aligned', action='store_true', dest='isaligned',
-            default=False, help='Use reference information instead of coreg for merged grid.')
+    parser.add_argument('-a', '--aligned', action='store_true', dest='isaligned', default=False,
+                        help='Use reference information instead of coreg for merged grid.')
 
     parser.add_argument('-l', '--multilook', action='store_true', dest='multilook', default=False,
                         help='Multilook the merged products. True or False')
 
-    parser.add_argument('-A', '--azimuth_looks', type=str, dest='numberAzimuthLooks', default=3,
-            help = 'azimuth looks')
+    parser.add_argument('-A', '--azimuth_looks', type=str, dest='numberAzimuthLooks', default=3, help='azimuth looks')
 
-    parser.add_argument('-R', '--range_looks', type=str, dest='numberRangeLooks', default=9,
-            help = 'range looks')
+    parser.add_argument('-R', '--range_looks', type=str, dest='numberRangeLooks', default=9, help='range looks')
 
     parser.add_argument('-n', '--name_pattern', type=str, dest='namePattern', default='fine*int',
-                help = 'a name pattern of burst products that will be merged. default: fine. it can be lat, lon, los, burst, hgt, shadowMask, incLocal')
+                        help='a name pattern of burst products that will be merged. '
+                             'default: fine. it can be lat, lon, los, burst, hgt, shadowMask, incLocal')
 
     parser.add_argument('-v', '--valid_only', action='store_true', dest='validOnly', default=False,
                         help='True for SLC, int and coherence. False for geometry files (lat, lon, los, hgt, shadowMask, incLocal).')
@@ -339,9 +339,6 @@ def multilook(infile, outname=None, alks=5, rlks=15, multilook_tool="isce", no_d
 
 
 
-
-
-#def runMergeBursts(self):
 def main(iargs=None):
     '''
     Merge burst products to make it look like stripmap.
@@ -391,7 +388,8 @@ def main(iargs=None):
         frames.append(ifg)
         referenceFrames.append(reference)
         print('bursts: ', minBurst, maxBurst)
-        fileList.append([os.path.join(inps.dirname, 'IW{0}'.format(swath), namePattern[0] + '_%02d.%s'%(x,namePattern[1])) for x in range(minBurst, maxBurst+1)])
+        fileList.append([os.path.join(inps.dirname, 'IW{0}'.format(swath), namePattern[0] + '_%02d.%s'%(x,namePattern[1]))
+                         for x in range(minBurst, maxBurst+1)])
 
     mergedir = os.path.dirname(inps.outfile)
     os.makedirs(mergedir, exist_ok=True)
@@ -399,10 +397,7 @@ def main(iargs=None):
     suffix = '.full'
     if (inps.numberRangeLooks == 1) and (inps.numberAzimuthLooks==1):
         suffix=''
-
-
         ####Virtual flag is ignored for multi-swath data
-    
         if (not virtual):
             print('User requested for multi-swath stitching.')
             print('Virtual files are the only option for this.')
@@ -417,10 +412,12 @@ def main(iargs=None):
 
     print(inps.multilook)
     if inps.multilook:
-        multilook(inps.outfile+suffix, outname = inps.outfile, 
-            alks = inps.numberAzimuthLooks, rlks=inps.numberRangeLooks,
-            multilook_tool=inps.multilookTool, no_data=inps.noData)
-
+        multilook(inps.outfile+suffix,
+                  outname=inps.outfile, 
+                  alks=inps.numberAzimuthLooks,
+                  rlks=inps.numberRangeLooks,
+                  multilook_tool=inps.multilookTool,
+                  no_data=inps.noData)
     else:
         print('Skipping multi-looking ....')
 
@@ -428,5 +425,4 @@ if __name__ == '__main__' :
     '''
     Merge products burst-by-burst.
     '''
-
     main()

contrib/stack/topsStack/s1a_isce_utils.py

@@ -32,10 +32,10 @@ def saveProduct( obj, xmlname):
     '''
     Save the product to an XML file using Product Manager.
     '''
-       # import shelve
-       # import os
-       # with shelve.open(os.path.dirname(xmlname) + '/'+ os.path.basename(xmlname)  +'.data') as db:
-       #     db['data'] = obj
+    import shelve
+    import os
+    with shelve.open(os.path.dirname(xmlname) + '/'+ os.path.basename(xmlname)  +'.data') as db:
+        db['data'] = obj
 
     from iscesys.Component.ProductManager import ProductManager as PM
 
@@ -46,6 +46,7 @@ def saveProduct( obj, xmlname):
 
     return None
 
+
 def getRelativeShifts(mFrame, sFrame, minBurst, maxBurst, secondaryBurstStart):
     '''
     Estimate the relative shifts between the start of the bursts.
@@ -177,6 +178,7 @@ def adjustValidSampleLine_V2(reference, secondary, minAz=0, maxAz=0, minRng=0, m
 
     return reference
 
+
 def adjustCommonValidRegion(reference,secondary):
     # valid lines between reference and secondary
 
@@ -264,6 +266,7 @@ def asBaseClass(inobj):
     else:
         raise Exception('Cannot be converted to TOPSSwathSLCProduct')
 
+
 def getSwathList(indir):
 
     swathList = []