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tableformat.py

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# tableformat.py

'''

class which does nothign and provides template is known as abstract class (also in c++)

'''

class TableFormatter: # is an abstract class

def headings(self, headers):

'''

Emit the table headings.

'''

raise NotImplementedError()

def row(self, rowdata):

'''

Emit a single row of table data.

'''

raise NotImplementedError()

class TextTableFormatter(TableFormatter):

'''

Emit a table in text fromat

'''

def headings(self, headers):

for h in headers:

print(f'{h:>10s}', end= ' ')

print()

print(('-'*10 + ' ')*len(headers))

#return super().headings(headers)

def row(self,rowdata):

for d in rowdata:

print(f'{d:>10s}', end= ' ')

print()