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python:f-strings [2020/05/31 07:58] – [書式編集のパフォーマンス比較] ともやん | python:f-strings [2023/05/08 09:33] (現在) – ともやん | ||
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- | < | + | ====== フォーマット済み文字列リテラル (f-strings) ====== |
- | < | + | <WRAP mincode> |
- | #mincode pre { | + | |
- | /*height: 300px;*/ | + | |
- | overflow: scroll; | + | |
- | overflow-x: hidden; | + | |
- | font-size: 10px; | + | |
- | } | + | |
- | # | + | |
- | height: 400px; | + | |
- | overflow: scroll; | + | |
- | overflow-x: hidden; | + | |
- | font-size: 10px; | + | |
- | } | + | |
- | #mintbl table { | + | |
- | font-size: 12px; | + | |
- | } | + | |
- | .dokuwiki .plugin_wrap table { | + | |
- | width: auto; | + | |
- | } | + | |
- | #result pre { | + | |
- | /*height: 300px;*/ | + | |
- | overflow: scroll; | + | |
- | overflow-x: hidden; | + | |
- | font-size: 10px; | + | |
- | } | + | |
- | </ | + | |
- | </ | + | |
- | ====== フォーマット済み文字列リテラル(f-strings) ====== | + | |
- | < | + | |
<code python> | <code python> | ||
- | str_val = ' | + | >>> |
- | f' | + | >>> |
' | ' | ||
- | pi = 3.14159265358979 | + | >>> |
- | f'pi: {pi: | + | >>> |
'pi: 3.14' | 'pi: 3.14' | ||
- | f'pi: {pi: | + | >>> |
' | ' | ||
- | flt_val = 123456789.0123456 | + | >>> |
- | f' | + | >>> |
'float value: 123, | 'float value: 123, | ||
- | flt_val = 1234.5678 | + | >>> |
- | f' | + | >>> |
'float value: | 'float value: | ||
- | f' | + | >>> |
'float value: | 'float value: | ||
- | 'int: {0:d}; hex: {0:#x}; oct: {0:#o}; bin: {0:# | + | >>> |
'int: 65536; hex: 0x10000; oct: 0o200000; bin: 0b10000000000000000' | 'int: 65536; hex: 0x10000; oct: 0o200000; bin: 0b10000000000000000' | ||
+ | |||
+ | >>> | ||
+ | >>> | ||
+ | ' | ||
+ | >>> | ||
+ | ' | ||
+ | >>> | ||
+ | ' title -------------' | ||
+ | >>> | ||
</ | </ | ||
</ | </ | ||
===== 書式編集のパフォーマンス比較 ===== | ===== 書式編集のパフォーマンス比較 ===== | ||
- | < | + | < |
<code python> | <code python> | ||
+ | $ python | ||
+ | Python 3.11.3 (main, Apr 5 2023, 00:00:00) [GCC 13.0.1 20230401 (Red Hat 13.0.1-0)] on linux | ||
+ | Type " | ||
+ | >>> | ||
+ | >>> | ||
+ | ... f' | ||
+ | 2.247387803014135 | ||
+ | >>> | ||
+ | ... '%s is %s.' % (name, age)""", | ||
+ | 2.269912829011446 | ||
+ | >>> | ||
+ | ... '{} is {}.' | ||
+ | 4.426570633018855 | ||
+ | >>> | ||
+ | ... '{0} is {1}.' | ||
+ | 5.005730772012612 | ||
+ | >>> | ||
+ | |||
$ python | $ python | ||
Python 3.8.3 (tags/ | Python 3.8.3 (tags/ | ||
行 85: | 行 84: | ||
[[https:// | [[https:// | ||
[[https:// | [[https:// | ||
+ | [[https:// | ||