diff --git a/10-seq-hacking/vector_v5.py b/10-seq-hacking/vector_v5.py
index cf327bc..ca00d44 100644
--- a/10-seq-hacking/vector_v5.py
+++ b/10-seq-hacking/vector_v5.py
@@ -268,7 +268,13 @@ def angle(self, n): # <2>
def angles(self): # <3>
return (self.angle(n) for n in range(1, len(self)))
+ max_format_size = 30
def __format__(self, fmt_spec=''):
+ showall = False
+ if fmt_spec.endswith('*'):
+ fmt_spec = fmt_spec[:-1]
+ showall = True
+
if fmt_spec.endswith('h'): # hyperspherical coordinates
fmt_spec = fmt_spec[:-1]
coords = itertools.chain([abs(self)],
@@ -277,7 +283,14 @@ def __format__(self, fmt_spec=''):
else:
coords = self
outer_fmt = '({})' # <6>
- components = (format(c, fmt_spec) for c in coords) # <7>
+
+ # if truncate is needed
+ if (not showall) and len(self) > self.max_format_size:
+ components = itertools.chain((format(x, fmt_spec) for index, x in enumerate(coords)
+ if index < self.max_format_size), ['...'])
+ else:
+ components = (format(x, fmt_spec) for x in coords) # <7>
+
return outer_fmt.format(', '.join(components)) # <8>
@classmethod
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