Scmall change in the acqparam generation function

bip/pipelines/dMRI_fieldmap/fieldmap_pre_topup_fnc.py

@@ -94,14 +94,11 @@ def get_acqparams_row(phase_encode, im, im_json):
     """
     Creates a row for the acqparams file from topup based
 
-    >>> get_acqparams_row("j-", 0.01)
-    "0 -1 0 0.01\n"
-    >>> get_acqparams_row("i")
-    "1 0 0 0.05\n"
-
     Args:
-        phase_encode: phase encode direction (string with two elements, first one should be i, j, or k, second one should be + or -)
-        im:           image file to get the number of lines to calculate the readout time
+        phase_encode: phase encode direction (string with two elements, first
+                      one should be i, j, or k, second one should be + or -)
+        im:           image file to get the number of lines to calculate the
+                      readout time
         im_json:      json file corresponding to the previous image
     """
 
@@ -115,11 +112,12 @@ def get_acqparams_row(phase_encode, im, im_json):
         if sign in dimensions:
             orient, sign = sign, orient
         if orient not in dimensions or sign not in '+-':
-            raise ValueError(f"Unrecognised phase encode direction {phase_encode}; should by like i- or j+")
+            raise ValueError('Unrecognised phase encode direction ' +
+                             f'{phase_encode}; should by like i- or j+')
         dimension = dimensions.index(orient)
         elements[dimension] = '1' if sign == '+' else '-1'
     else:
-        raise ValueError(f"Unrecognised phase encode direction {phase_encode}")
+        raise ValueError(f'Unrecognised phase encode direction {phase_encode}')
 
     imAP = nib.load(im)
     numlines = imAP.header['dim'][dimension]