line_width failure

[lodagro]

Two examples where line_width display option requirement is not met:

In [1]: import pandas as pd

In [2]: pd.__version__
Out[2]: '0.11.0.dev-250c8e0'

In [3]: len(repr(pd.DataFrame(123456, range(5), range(15))).split('\n')[1])
Out[3]: 92

In [4]: pd.options.display.max_columns = 100

In [5]: len(repr(pd.DataFrame(0, range(5), range(35))).split('\n')[1])
Out[5]: 104

https://github.com/pydata/pandas/blob/master/pandas/core/frame.py#L619
max_columns is compared against the number of frame columns, not terminal columns ("width").

max "terminal columns" is controlled by terminal_width, which is only known when
working in a textual terminal.

[lodagro]

This is a df.to_string() issue, the code you are referring too is not in play here.

In [33]: df = pd.DataFrame(0, range(5), range(35))

In [34]: s = df.to_string(line_width=80)

In [35]: print s
   0   1   2   3   4   5   6   7   8   9   10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  \
0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   
1   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   
2   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   
3   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   
4   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   

   25  26  27  28  29  30  31  32  33  34  
0   0   0   0   0   0   0   0   0   0   0  
1   0   0   0   0   0   0   0   0   0   0  
2   0   0   0   0   0   0   0   0   0   0  
3   0   0   0   0   0   0   0   0   0   0  
4   0   0   0   0   0   0   0   0   0   0  

In [36]: lines = s.split('\n')

In [37]: len(lines[1])
Out[37]: 104

In [38]: max(len(line) for line in lines)
Out[38]: 104