FixedWidthNoHeader

class astropy.io.ascii.FixedWidthNoHeader(col_starts=None, col_ends=None, delimiter_pad=' ', bookend=True)

Bases: astropy.io.ascii.FixedWidth

Read or write a fixed width table which has no header line. Column names are either input (names keyword) or auto-generated. Column positions are determined either by input (col_starts and col_stops keywords) or by splitting the first data line. In the latter case a delimiter is required to split the data line.

Examples:

# Bar delimiter in header and data

|  1.2  | hello there |     3 |
|  2.4  | many words  |     7 |

# Compact table having no delimiter and column positions specified as input

1.2hello there3
2.4many words 7

This class is just a convenience wrapper around the FixedWidth reader but with header.start_line = None and data.start_line = 0.

See the Fixed-width Gallery for specific usage examples.

Parameters:

• col_starts – list of start positions for each column (0-based counting)
• col_ends – list of end positions (inclusive) for each column
• delimiter_pad – padding around delimiter when writing (default = None)
• bookend – put the delimiter at start and end of line when writing (default = False)