fix formatting and use pythonic approach

examples/aws_credentials.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2020 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2020 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/bucket_exists.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/chain_credentials.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2020 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2020 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,10 +14,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# A Chain credentials provider, provides a way of chaining multiple providers together
-# and will pick the first available using priority order of the 'providers' list
+# A Chain credentials provider, provides a way of chaining multiple providers
+# together and will pick the first available using priority order of the
+# 'providers' list
 
-from minio.credentials import Chain, EnvAWS, EnvMinio, IamEc2MetaData
+from minio import Minio
+from minio.credentials import (
+    Chain, EnvAWS, EnvMinio, IamEc2MetaData, Credentials)
 
 client = Minio('s3.amazonaws.com',
                credentials=Credentials(

examples/copy_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2016 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2016 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,8 +17,7 @@
 # Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-testfile, my-bucketname and
 # my-objectname are dummy values, please replace them with original values.
 
-import time
-from datetime import datetime
+from datetime import datetime, timezone
 
 from minio import Minio, CopyConditions
 from minio.error import ResponseError
@@ -28,12 +28,11 @@
 
 # client.trace_on(sys.stderr)
 copy_conditions = CopyConditions()
-# Set modified condition, copy object modified since 2014 April.
-t = (2014, 4, 0, 0, 0, 0, 0, 0, 0)
-mod_since = datetime.utcfromtimestamp(time.mktime(t))
+# Set modified condition, copy object modified since 1st April 2014.
+mod_since = datetime(2014, 4, 1, tzinfo=timezone.utc)
 copy_conditions.set_modified_since(mod_since)
 
-# Set unmodified condition, copy object unmodified since 2014 April.
+# Set unmodified condition, copy object unmodified since 1st April 2014.
 # copy_conditions.set_unmodified_since(mod_since)
 
 # Set matching ETag condition, copy object which matches the following ETag.

examples/copy_object_with_metadata.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2016,2017,2018 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2016,2017,2018 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,6 +17,7 @@
 # Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-testfile, my-bucketname and
 # my-objectname are dummy values, please replace them with original values.
 
+from minio import Minio
 from minio.error import ResponseError
 
 client = Minio('s3.amazonaws.com',

examples/fget_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,8 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname and my-objectname are
-# dummy values, please replace them with original values.
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname and my-objectname
+# are dummy values, please replace them with original values.
 
 from minio import Minio
 from minio.error import ResponseError

examples/fput_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,8 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname and
-# my-filepath dummy values, please replace them with original values.
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname
+# and my-filepath dummy values, please replace them with original values.
 
 from minio import Minio
 from minio.error import ResponseError

examples/get_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,8 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname and
-# my-testfile are dummy values, please replace them with original values.
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname
+# and my-testfile are dummy values, please replace them with original values.
 
 from minio import Minio
 from minio.error import ResponseError

examples/get_partial_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,8 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname and
-# my-testfile are dummy values, please replace them with original values.
+# Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname
+# and my-testfile are dummy values, please replace them with original values.
 
 from minio import Minio
 from minio.error import ResponseError

examples/list_buckets.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/list_incomplete_uploads.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/list_objects.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/make_bucket.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/presigned_get_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/presigned_post_policy.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,8 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Note: my-bucketname, my-objectname, YOUR-ACCESSKEYID, and YOUR-SECRETACCESSKEY
-# are dummy values, please replace them with original values.
+# Note: my-bucketname, my-objectname, YOUR-ACCESSKEYID, and
+# YOUR-SECRETACCESSKEY are dummy values, please replace them with original
+# values.
 
 from datetime import datetime, timedelta
 
@@ -31,22 +33,23 @@
 post_policy.set_content_length_range(10, 1024)
 
 # set expiry 10 days into future.
-expires_date = datetime.utcnow()+timedelta(days=10)
+expires_date = datetime.utcnow() + timedelta(days=10)
 post_policy.set_expires(expires_date)
 
 client = Minio('s3.amazonaws.com',
                access_key='YOUR-ACCESSKEYID',
                secret_key='YOUR-SECRETACCESSKEY')
 
 try:
-    url_str, signed_form_data = client.presigned_post_policy(post_policy)
-    curl_str = 'curl -X POST {0}'.format(url_str)
-    curl_cmd = [curl_str]
-    for field in signed_form_data:
-        curl_cmd.append('-F {0}={1}'.format(field, signed_form_data[field]))
+    url, signed_form_data = client.presigned_post_policy(post_policy)
+
+    curl_cmd = (
+        ['curl -X POST {0}'.format(url)] +
+        ['-F {0}={1}'.format(k, v) for k, v in signed_form_data.items()] +
+        ['-F file=@<FILE>']
+    )
 
     # print curl command to upload files.
-    curl_cmd.append('-F file=@<FILE>')
     print(' '.join(curl_cmd))
 except ResponseError as err:
     print(err)

examples/presigned_put_object.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2015 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

examples/progress.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
-# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C)
-# 2018 MinIO, Inc.
+# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
+# (C) 2018 MinIO, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -73,7 +73,8 @@ def __init__(self, interval=1, stdout=sys.stdout):
 
     def set_meta(self, total_length, object_name):
         """
-        Metadata settings for the object. This method called before uploading object
+        Metadata settings for the object. This method called before uploading
+        object
         :param total_length: Total length of object.
         :param object_name: Object name to be showed.
         """
@@ -82,7 +83,6 @@ def set_meta(self, total_length, object_name):
         self.prefix = self.object_name + ': ' if self.object_name else ''
 
     def run(self):
-
         displayed_time = 0
         while True:
             try:
@@ -92,22 +92,27 @@ def run(self):
                 elapsed_time = time.time() - self.initial_time
                 if elapsed_time > displayed_time:
                     displayed_time = elapsed_time
-                self.print_status(current_size=self.current_size, total_length=self.total_length,
-                                  displayed_time=displayed_time, prefix=self.prefix)
+                self.print_status(current_size=self.current_size,
+                                  total_length=self.total_length,
+                                  displayed_time=displayed_time,
+                                  prefix=self.prefix)
                 continue
 
             current_size, total_length = task
             displayed_time = time.time() - self.initial_time
-            self.print_status(current_size=current_size, total_length=total_length,
-                              displayed_time=displayed_time, prefix=self.prefix)
+            self.print_status(current_size=current_size,
+                              total_length=total_length,
+                              displayed_time=displayed_time,
+                              prefix=self.prefix)
             self.display_queue.task_done()
             if current_size == total_length:
                 self.done_progress()
 
     def update(self, size):
         """
         Update object size to be showed. This method called while uploading
-        :param size: Object size to be showed. The object size should be in bytes.
+        :param size: Object size to be showed. The object size should be in
+                     bytes.
         """
         if not isinstance(size, int):
             raise ValueError('{} type can not be displayed. '
@@ -123,9 +128,8 @@ def done_progress(self):
         self.current_size = 0
 
     def print_status(self, current_size, total_length, displayed_time, prefix):
-
-        formatted_str = prefix + \
-            format_string(current_size, total_length, displayed_time)
+        formatted_str = prefix + format_string(
+            current_size, total_length, displayed_time)
         self.stdout.write(_REFRESH_CHAR + formatted_str + ' ' *
                           max(self.last_printed_len - len(formatted_str), 0))
         self.stdout.flush()
@@ -160,15 +164,17 @@ def format_string(current_size, total_length, elapsed_time):
         n_to_mb / elapsed_time) if elapsed_time else _UNKNOWN_SIZE
     frac = float(current_size) / total_length
     bar_length = int(frac * _BAR_SIZE)
-    bar = _FINISHED_BAR * bar_length + \
-        _REMAINING_BAR * (_BAR_SIZE - bar_length)
+    bar = (_FINISHED_BAR * bar_length +
+           _REMAINING_BAR * (_BAR_SIZE - bar_length))
     percentage = _PERCENTAGE_FORMAT % (frac * 100)
-    left_str = seconds_to_time(
-        elapsed_time / current_size * (total_length - current_size)) if current_size else _UNKNOWN_SIZE
+    left_str = (
+        seconds_to_time(
+            elapsed_time / current_size * (total_length - current_size))
+        if current_size else _UNKNOWN_SIZE)
 
     humanized_total = _HUMANINZED_FORMAT % (
         total_length / _KILOBYTE / _KILOBYTE) + _STR_MEGABYTE
     humanized_n = _HUMANINZED_FORMAT % n_to_mb + _STR_MEGABYTE
 
-    return _DISPLAY_FORMAT % (
-        bar, humanized_n, humanized_total, percentage, elapsed_str, left_str, rate)
+    return _DISPLAY_FORMAT % (bar, humanized_n, humanized_total, percentage,
+                              elapsed_str, left_str, rate)