use f-strings (#10899)

* use f-strings

* add changelog frag

* Apply suggestions from code review

Co-authored-by: Felix Fontein <felix@fontein.de>

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

changelogs/fragments/10899-use-f-strings.yml

@@ -0,0 +1,14 @@
+minor_changes:
+  - wsl connection plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - accumulate filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - counter filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - crc32 filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - groupby_as_dict filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - hashids filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - json_query filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - lists filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - random_mac filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - time filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - unicode_normalize filter plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - passwordstore lookup plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).
+  - ansible_type plugin_utils plugin - use f-strings for string templating (https://github.com/ansible-collections/community.general/pull/10899).

plugins/connection/wsl.py

@@ -649,7 +649,7 @@ class Connection(ConnectionBase):
                 if password_prompt:
                     if self.become:
                         become_pass = self.become.get_option('become_pass')
-                        chan.sendall(to_bytes(become_pass + '\n', errors='surrogate_or_strict'))
+                        chan.sendall(to_bytes(f"{become_pass}\n", errors='surrogate_or_strict'))
                     else:
                         raise AnsibleError('A password is required but none was supplied')
                 else:
@@ -687,9 +687,7 @@ class Connection(ConnectionBase):
             with open(in_path, 'rb') as f:
                 data = f.read()
                 returncode, stdout, stderr = self.exec_command(
-                    ' '.join([
-                        self._shell.executable, '-c',
-                        self._shell.quote(f'cat > {out_path}')]),
+                    f"{self._shell.executable} -c {self._shell.quote(f'cat > {out_path}')}",
                     in_data=data,
                     sudoable=False)
             if returncode != 0:
@@ -708,9 +706,7 @@ class Connection(ConnectionBase):
         display.vvv(f'FETCH {in_path} TO {out_path}', host=self.get_option('remote_addr'))
         try:
             returncode, stdout, stderr = self.exec_command(
-                ' '.join([
-                    self._shell.executable, '-c',
-                    self._shell.quote(f'cat {in_path}')]),
+                f"{self._shell.executable} -c {self._shell.quote(f'cat {in_path}')}",
                 sudoable=False)
             if returncode != 0:
                 if 'cat: not found' in stderr.decode('utf-8'):

plugins/filter/accumulate.py

@@ -49,8 +49,7 @@ from ansible.errors import AnsibleFilterError
 
 def list_accumulate(sequence):
     if not isinstance(sequence, Sequence):
-        raise AnsibleFilterError('Invalid value type (%s) for accumulate (%r)' %
-                                 (type(sequence), sequence))
+        raise AnsibleFilterError(f'Invalid value type ({type(sequence)}) for accumulate ({sequence!r})')
 
     return accumulate(sequence)
 

plugins/filter/counter.py

@@ -42,14 +42,13 @@ from collections import Counter
 def counter(sequence):
     ''' Count elements in a sequence. Returns dict with count result. '''
     if not isinstance(sequence, Sequence):
-        raise AnsibleFilterError('Argument for community.general.counter must be a sequence (string or list). %s is %s' %
-                                 (sequence, type(sequence)))
+        raise AnsibleFilterError(f'Argument for community.general.counter must be a sequence (string or list). {sequence} is {type(sequence)}')
 
     try:
         result = dict(Counter(sequence))
     except TypeError as e:
         raise AnsibleFilterError(
-            "community.general.counter needs a sequence with hashable elements (int, float or str) - %s" % (e)
+            f"community.general.counter needs a sequence with hashable elements (int, float or str) - {e}"
         )
     return result
 

plugins/filter/crc32.py

@@ -45,14 +45,13 @@ _value:
 
 def crc32s(value):
     if not is_string(value):
-        raise AnsibleFilterError('Invalid value type (%s) for crc32 (%r)' %
-                                 (type(value), value))
+        raise AnsibleFilterError(f'Invalid value type ({type(value)}) for crc32 ({value!r})')
 
     if not HAS_ZLIB:
         raise AnsibleFilterError('Failed to import zlib module')
 
     data = to_bytes(value, errors='surrogate_or_strict')
-    return "{0:x}".format(crc32(data) & 0xffffffff)
+    return f"{crc32(data) & 0xffffffff:x}"
 
 
 class FilterModule:

plugins/filter/groupby_as_dict.py

@@ -70,12 +70,12 @@ def groupby_as_dict(sequence, attribute):
     result = dict()
     for list_index, element in enumerate(sequence):
         if not isinstance(element, Mapping):
-            raise AnsibleFilterError('Sequence element #{0} is not a mapping'.format(list_index))
+            raise AnsibleFilterError(f'Sequence element #{list_index} is not a mapping')
         if attribute not in element:
-            raise AnsibleFilterError('Attribute not contained in element #{0} of sequence'.format(list_index))
+            raise AnsibleFilterError(f'Attribute not contained in element #{list_index} of sequence')
         result_index = element[attribute]
         if result_index in result:
-            raise AnsibleFilterError('Multiple sequence entries have attribute value {0!r}'.format(result_index))
+            raise AnsibleFilterError(f'Multiple sequence entries have attribute value {result_index!r}')
         result[result_index] = element
     return result
 

plugins/filter/hashids.py

@@ -66,9 +66,7 @@ def hashids_encode(nums, salt=None, alphabet=None, min_length=None):
     try:
         hashid = hashids.encode(*nums)
     except TypeError as e:
-        raise AnsibleTypeError(
-            "Data to encode must by a tuple or list of ints: %s" % to_native(e)
-        )
+        raise AnsibleTypeError(f"Data to encode must by a tuple or list of ints: {e}")
 
     return hashid
 

plugins/filter/json_query.py

@@ -137,10 +137,10 @@ def json_query(data, expr):
     try:
         return jmespath.search(expr, data)
     except jmespath.exceptions.JMESPathError as e:
-        raise AnsibleFilterError('JMESPathError in json_query filter plugin:\n%s' % e)
+        raise AnsibleFilterError(f'JMESPathError in json_query filter plugin:\n{e}')
     except Exception as e:
         # For older jmespath, we can get ValueError and TypeError without much info.
-        raise AnsibleFilterError('Error in jmespath.search in json_query filter plugin:\n%s' % e)
+        raise AnsibleFilterError(f'Error in jmespath.search in json_query filter plugin:\n{e}')
 
 
 class FilterModule(object):

plugins/filter/lists.py

@@ -50,9 +50,7 @@ def lists_union(*args, **kwargs):
     if kwargs:
         # Some unused kwargs remain
         raise AnsibleFilterError(
-            "lists_union() got unexpected keywords arguments: {0}".format(
-                ", ".join(kwargs.keys())
-            )
+            f"lists_union() got unexpected keywords arguments: {', '.join(kwargs.keys())}"
         )
 
     if flatten:
@@ -81,9 +79,7 @@ def lists_intersect(*args, **kwargs):
     if kwargs:
         # Some unused kwargs remain
         raise AnsibleFilterError(
-            "lists_intersect() got unexpected keywords arguments: {0}".format(
-                ", ".join(kwargs.keys())
-            )
+            f"lists_intersect() got unexpected keywords arguments: {', '.join(kwargs.keys())}"
         )
 
     if flatten:
@@ -121,9 +117,7 @@ def lists_difference(*args, **kwargs):
     if kwargs:
         # Some unused kwargs remain
         raise AnsibleFilterError(
-            "lists_difference() got unexpected keywords arguments: {0}".format(
-                ", ".join(kwargs.keys())
-            )
+            f"lists_difference() got unexpected keywords arguments: {', '.join(kwargs.keys())}"
         )
 
     if flatten:
@@ -161,9 +155,7 @@ def lists_symmetric_difference(*args, **kwargs):
     if kwargs:
         # Some unused kwargs remain
         raise AnsibleFilterError(
-            "lists_difference() got unexpected keywords arguments: {0}".format(
-                ", ".join(kwargs.keys())
-            )
+            f"lists_difference() got unexpected keywords arguments: {', '.join(kwargs.keys())}"
         )
 
     if flatten:

plugins/filter/random_mac.py

@@ -51,15 +51,13 @@ def random_mac(value, seed=None):
         to get a complete 6 bytes MAC address '''
 
     if not isinstance(value, str):
-        raise AnsibleFilterError('Invalid value type (%s) for random_mac (%s)' %
-                                 (type(value), value))
+        raise AnsibleFilterError(f'Invalid value type ({type(value)}) for random_mac ({value})')
 
     value = value.lower()
     mac_items = value.split(':')
 
     if len(mac_items) > 5:
-        raise AnsibleFilterError('Invalid value (%s) for random_mac: 5 colon(:) separated'
-                                 ' items max' % value)
+        raise AnsibleFilterError(f'Invalid value ({value}) for random_mac: 5 colon(:) separated items max')
 
     err = ""
     for mac in mac_items:
@@ -67,11 +65,11 @@ def random_mac(value, seed=None):
             err += ",empty item"
             continue
         if not re.match('[a-f0-9]{2}', mac):
-            err += ",%s not hexa byte" % mac
+            err += f",{mac} not hexa byte"
     err = err.strip(',')
 
     if err:
-        raise AnsibleFilterError('Invalid value (%s) for random_mac: %s' % (value, err))
+        raise AnsibleFilterError(f'Invalid value ({value}) for random_mac: {err}')
 
     if seed is None:
         r = SystemRandom()
@@ -81,7 +79,7 @@ def random_mac(value, seed=None):
     v = r.randint(68719476736, 1099511627775)
     # Select first n chars to complement input prefix
     remain = 2 * (6 - len(mac_items))
-    rnd = ('%x' % v)[:remain]
+    rnd = f'{v:x}'[:remain]
     return value + re.sub(r'(..)', r':\1', rnd)
 
 

plugins/filter/time.py

@@ -55,10 +55,10 @@ def to_time_unit(human_time, unit='ms', **kwargs):
 
     unit = unit_to_short_form.get(unit.rstrip('s'), unit)
     if unit not in unit_factors:
-        raise AnsibleFilterError("to_time_unit() can not convert to the following unit: %s. "
-                                 "Available units (singular or plural): %s. "
-                                 "Available short units: %s"
-                                 % (unit, ', '.join(unit_to_short_form.keys()), ', '.join(unit_factors.keys())))
+        raise AnsibleFilterError((
+            f"to_time_unit() can not convert to the following unit: {unit}. Available units (singular or plural):"
+            f"{', '.join(unit_to_short_form.keys())}. Available short units: {', '.join(unit_factors.keys())}"
+        ))
 
     if 'year' in kwargs:
         unit_factors['y'] = unit_factors['y'][:-1] + [kwargs.pop('year')]
@@ -66,14 +66,14 @@ def to_time_unit(human_time, unit='ms', **kwargs):
         unit_factors['mo'] = unit_factors['mo'][:-1] + [kwargs.pop('month')]
 
     if kwargs:
-        raise AnsibleFilterError('to_time_unit() got unknown keyword arguments: %s' % ', '.join(kwargs.keys()))
+        raise AnsibleFilterError(f"to_time_unit() got unknown keyword arguments: {', '.join(kwargs.keys())}")
 
     result = 0
     for h_time_string in human_time.split():
         res = re.match(r'(-?\d+)(\w+)', h_time_string)
         if not res:
             raise AnsibleFilterError(
-                "to_time_unit() can not interpret following string: %s" % human_time)
+                f"to_time_unit() can not interpret following string: {human_time}")
 
         h_time_int = int(res.group(1))
         h_time_unit = res.group(2)
@@ -81,7 +81,7 @@ def to_time_unit(human_time, unit='ms', **kwargs):
         h_time_unit = unit_to_short_form.get(h_time_unit.rstrip('s'), h_time_unit)
         if h_time_unit not in unit_factors:
             raise AnsibleFilterError(
-                "to_time_unit() can not interpret following string: %s" % human_time)
+                f"to_time_unit() can not interpret following string: {human_time}")
 
         time_in_milliseconds = h_time_int * multiply(unit_factors[h_time_unit])
         result += time_in_milliseconds

plugins/filter/unicode_normalize.py

@@ -68,10 +68,10 @@ def unicode_normalize(data, form='NFC'):
     """
 
     if not isinstance(data, str):
-        raise AnsibleTypeError("%s is not a valid input type" % type(data))
+        raise AnsibleTypeError(f"{type(data)} is not a valid input type")
 
     if form not in ('NFC', 'NFD', 'NFKC', 'NFKD'):
-        raise AnsibleFilterError("%s is not a valid form" % form)
+        raise AnsibleFilterError(f"{form!r} is not a valid form")
 
     return normalize(form, data)
 

plugins/lookup/passwordstore.py

@@ -459,7 +459,8 @@ class LookupModule(LookupBase):
             if self.paramvals['preserve'] or self.paramvals['timestamp']:
                 msg += '\n'
                 if self.paramvals['preserve'] and self.passoutput[1:]:
-                    msg += '\n'.join(self.passoutput[1:]) + '\n'
+                    msg += '\n'.join(self.passoutput[1:])
+                    msg += '\n'
                 if self.paramvals['timestamp'] and self.paramvals['backup']:
                     msg += f"lookup_pass: old password was {self.password} (Updated on {datetime})\n"
 

plugins/plugin_utils/ansible_type.py

@@ -48,13 +48,13 @@ def _ansible_type(data, alias, *, use_native_type: bool = False):
     if data_type == 'list' and len(data) > 0:
         items = [_atype(i, alias, use_native_type=use_native_type) for i in data]
         items_type = '|'.join(sorted(set(items)))
-        return ''.join((data_type, '[', items_type, ']'))
+        return f"{data_type}[{items_type}]"
 
     if data_type == 'dict' and len(data) > 0:
         keys = [_atype(i, alias, use_native_type=use_native_type) for i in data.keys()]
         vals = [_atype(i, alias, use_native_type=use_native_type) for i in data.values()]
         keys_type = '|'.join(sorted(set(keys)))
         vals_type = '|'.join(sorted(set(vals)))
-        return ''.join((data_type, '[', keys_type, ', ', vals_type, ']'))
+        return f"{data_type}[{keys_type}, {vals_type}]"
 
     return data_type