Dec 24, 2017
diff --git a/10-seq-hacking/vector_v5.py b/10-seq-hacking/vector_v5.py
    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)],
        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
Original file line number	Diff line number	Diff line change
Expand Up		@@ -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)],
Expand All		@@ -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
Expand Down