FixedWidthHeader

class astropy.io.ascii.FixedWidthHeader

Bases: astropy.io.ascii.BaseHeader

Fixed width table header reader.

The key settable class attributes are:

Parameters:

• auto_format – format string for auto-generating column names
• start_line – None, int, or a function of lines that returns None or int
• comment – regular expression for comment lines
• splitter_class – Splitter class for splitting data lines into columns
• position_line – row index of line that specifies position (default = 1)
• position_char – character used to write the position line (default = “-”)
• 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)

Attributes Summary

position_line

Methods Summary

get_cols(lines)	Initialize the header Column objects from the table lines.
get_fixedwidth_params(line)	Split line on the delimiter and determine column values and column start and end positions.
get_line(lines, index)
write(lines)

Attributes Documentation

position_line = None

Methods Documentation

get_cols(lines)

Initialize the header Column objects from the table lines.

Based on the previously set Header attributes find or create the column names. Sets self.cols with the list of Columns.

Parameters:lines – list of table lines Returns:None

get_fixedwidth_params(line)

Split line on the delimiter and determine column values and column start and end positions. This might include null columns with zero length (e.g. for header row = "| col1 || col2 | col3 |" or header2_row = "----- ------- -----"). The null columns are stripped out. Returns the values between delimiters and the corresponding start and end positions.

Parameters:line – input line Returns:(vals, starts, ends)

get_line(lines, index)

write(lines)