def try_chunk(self, chunk):
start_line, start_idx, end_idx = chunk.start_line, chunk.start_idx, chunk.end_idx
line = self.src_lines[start_line]
contract_lines = chunk.n_lines - 1
if contract_lines == 0:
rest = line[end_idx:]
else:
next_line = self.src_lines[start_line + contract_lines]
rest = next_line[end_idx:]
try:
quote_type = chunk.tokens[0].get_quote_type()
except FlyntException:
pass
else:
converted, meta = transform_chunk(str(chunk),
quote_type=quote_type)
if meta['changed']:
multiline_condition = (not contract_lines or len("".join(
[converted, rest])) <= self.len_limit - start_idx)
if multiline_condition:
self.results.append(converted)
self.count_expressions += 1
self.last_line += contract_lines
self.last_idx = end_idx
def test_mixed_numbered():
code = '''"Flask Documentation ({1} {0:.2f} {name})".format(version,sprt,name=NAME)'''
expected = '''f"""Flask Documentation ({sprt} {version:.2f} {NAME})"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_fmt_spec():
code = '''"my string {:.2f}".format(var)'''
expected = '''f"""my string {var:.2f}"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_newline():
code = r'''"echo '{}'\n".format(self.FLUSH_CMD)'''
expected = '''f"""echo '{self.FLUSH_CMD}'\\n"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_expr_no_paren():
code = '''"my string {:.2f}".format(var+1)'''
expected = '''f"""my string {var + 1:.2f}"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_digit_grouping():
code = '''"Failed after {:,}".format(x)'''
expected = '''f"""Failed after {x:,}"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_numbered():
code = '''"""Flask Documentation ({0})""".format(version)'''
expected = '''f"""Flask Documentation ({version})"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_implicit_string_concat():
code = '''"Helloo {}" "!!!".format(world)'''
expected = '''f"""Helloo {world}!!!"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_digit_grouping_2():
code = '''
"Search: finished in {0:,} ms.".format(vm.search_time_elapsed_ms)
'''.strip()
expected = '''
f"""Search: finished in {vm.search_time_elapsed_ms:,} ms."""
'''.strip()
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_multiline():
code = '''
"Flask Documentation ({})".format(
version
)
'''.strip()
expected = '''f"""Flask Documentation ({version})"""'''
new, meta = transform_chunk(code)
assert meta['changed']
assert new == expected
def test_unpacking_no_change():
code = '''e.description = "KeyError: '{}'".format(*e.args)'''
new, meta = transform_chunk(code)
assert not meta['changed']
assert new == code