Fix max_seq_length input to RepresentationPrinter

max_seq_length is passed to RepresentationPrinter as a positional
argument but the order is not correct for RepresentationPrinter's
__init__. Pass max_seq_length as a keyword argument instead.

IPython/lib/pretty.py

@@ -124,7 +124,7 b" def pretty(obj, verbose=False, max_width=79, newline='\\n', max_seq_length=MAX_SE"
     Pretty print the object's representation.
     """
     stream = CUnicodeIO()
-    printer = RepresentationPrinter(stream, verbose, max_width, newline, max_seq_length)
+    printer = RepresentationPrinter(stream, verbose, max_width, newline, max_seq_length=max_seq_length)
     printer.pretty(obj)
     printer.flush()
     return stream.getvalue()
@@ -134,7 +134,7 b" def pprint(obj, verbose=False, max_width=79, newline='\\n', max_seq_length=MAX_SE"
     """
     Like `pretty` but print to stdout.
     """
-    printer = RepresentationPrinter(sys.stdout, verbose, max_width, newline, max_seq_length)
+    printer = RepresentationPrinter(sys.stdout, verbose, max_width, newline, max_seq_length=max_seq_length)
     printer.pretty(obj)
     printer.flush()
     sys.stdout.write(newline)