🐛 Fix header reading for bandpass filters

CPAC/nuisance/bandpass.py

@@ -110,16 +110,16 @@ def bandpass_voxels(realigned_file, regressor_file, bandpass_freqs,
             img.to_filename(regressor_bandpassed_file)
 
         else:
-            with open(regressor_file, 'r') as f:
-                header = []
-
-                # header wouldn't be longer than 5, right? I don't want to 
-                # loop over the whole file
-                for i in range(5):
-                    line = f.readline()
-                    if line.startswith('#') or isinstance(line[0], str):
+            header = []
+            with open(regressor_file, "r") as _f:
+                # Each leading line that doesn't start with a number goes into the header
+                for line in _f.readlines():
+                    try:
+                        float(line.split()[0])
+                        break
+                    except ValueError:
                         header.append(line)
-            
+
             # usecols=[list]
             regressor = np.loadtxt(regressor_file, skiprows=len(header))
             Yc = regressor - np.tile(regressor.mean(0), (regressor.shape[0], 1))