tabs in a string replacing them by one or more spaces, depending on the current column and the given tab size. The column number is reset to zero after each newline occurring in the string. This doesn’t of bytes and then recreate the objects from the bytes. The various DBM-related modules support a family of hash-based file formats that store a mapping of strings to other strings. The bsddb module also SQLite interface parse the column name for each column it returns. It will look for a string formed [mytype] in there, and then decide that ‘mytype’is the type of the column. It will try to find an entry

tabs in a string replacing them by one or more spaces, depending on the current column and the given tab size. The column number is reset to zero after each newline occurring in the string. This doesn’t of bytes and then recreate the objects from the bytes. The various DBM-related modules support a family of hash-based file formats that store a mapping of strings to other strings. The bsddb module also SQLite interface parse the column name for each column it returns. It will look for a string formed [mytype] in there, and then decide that ‘mytype’is the type of the column. It will try to find an entry

tabs in a string replacing them by one or more spaces, depending on the current column and the given tab size. The column number is reset to zero after each newline occurring in the string. This doesn’t of bytes and then recreate the objects from the bytes. The various DBM-related modules support a family of hash-based file formats that store a mapping of strings to other strings. The bsddb module also SQLite interface parse the column name for each column it returns. It will look for a string formed [mytype] in there, and then decide that ‘mytype’is the type of the column. It will try to find an entry

import collections import re Token = collections.namedtuple('Token', ['type', 'value', 'line', 'column']) def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} token_specification = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;

import collections import re Token = collections.namedtuple('Token', ['type', 'value', 'line', 'column']) def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} token_specification = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;

import collections import re Token = collections.namedtuple('Token', ['type', 'value', 'line', 'column']) def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} token_specification = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;

from typing import NamedTuple import re class Token(NamedTuple): type: str value: str line: int column: int def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} (续下页) = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;

from typing import NamedTuple import re class Token(NamedTuple): type: str value: str line: int column: int def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} token_specification = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;

import collections import re Token = collections.namedtuple('Token', ['type', 'value', 'line', 'column']) def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} token_specification = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;

from typing import NamedTuple import re class Token(NamedTuple): type: str value: str line: int column: int def tokenize(code): keywords = {'IF', 'THEN', 'ENDIF', 'FOR', 'NEXT', 'GOSUB', 'RETURN'} token_specification = 1 line_start = 0 for mo in re.finditer(tok_regex, code): kind = mo.lastgroup value = mo.group() column = mo.start() - line_start if kind == 'NUMBER': value = float(value) if '.' in value else int(value) raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price * 0.05; ENDIF;