#!/usr/bin/python?
#?-*-?coding=utf-8?-*-

import?math?

radius?=?float（input（‘請輸入圓的半徑:?‘））
perimeter?=?2?*?math.pi?*?radius
area?=?math.pi?*?radius?*?radius
print（‘周長:?%.2f‘?%?perimeter）
print（‘面積:?%.2f‘?%?area）

?屬性????????????大小?????日期????時間???名稱
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?????目錄???????????0??2019-05-21?09:01??闃塊噷浜戦┈鍝ython璧勬枡\
?????文件????????6148??2019-06-13?17:03??闃塊噷浜戦┈鍝ython璧勬枡\.DS_Store
?????目錄???????????0??2019-06-13?17:03??__MACOSX\
?????目錄???????????0??2019-06-13?17:03??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\
?????文件?????????120??2019-06-13?17:03??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\._.DS_Store
?????目錄???????????0??2019-05-15?18:03??闃塊噷浜戦┈鍝ython璧勬枡\script\
?????文件?????????161??2019-05-15?17:58??闃塊噷浜戦┈鍝ython璧勬枡\script\year.py
?????文件?????????236??2019-05-15?18:02??闃塊噷浜戦┈鍝ython璧勬枡\script\perimeter-area.py
?????文件???????????0??2019-05-21?09:20??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?
?????文件???????????0??2019-04-26?14:42??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?
?????文件????????1682??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?basetest.py
?????文件?????????482??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?璐ㄦ暟絳涙硶.txt
?????文件???????12288??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?shell緙栫▼棰樼洰.txt
?????文件???????????0??2019-06-13?17:03??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?
?????文件???????????0??2019-06-13?17:03??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?
?????文件?????????176??2019-04-26?14:37??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._shell緙栫▼棰樼洰.txt
?????文件??????695377??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?Python鐜瀹夎.pdf
?????文件?????????233??2019-04-26?14:37??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._Python鐜瀹夎.pdf
?????文件?????2385548??2019-04-26?14:38??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?01姒傝堪鍙婄幆澧冩惌寤?pdf
?????文件?????????233??2019-04-26?14:38??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._01姒傝堪鍙婄幆澧冩惌寤?pdf
?????文件??????141019??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?Pyenv瀹夎錛堝彲閫夋嫨鏂囧瓧錛?pdf
?????文件?????????233??2019-04-26?14:37??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._Pyenv瀹夎錛堝彲閫夋嫨鏂囧瓧錛?pdf
?????文件??????678393??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?浣滀笟鍙傝€?pdf
?????文件?????????233??2019-04-26?14:37??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._浣滀笟鍙傝€?pdf
?????文件?????2770268??2019-04-26?14:38??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?Windows瀹夎Python3銆両Python銆丳ycharm.pdf
?????文件?????2628300??2019-04-26?14:38??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?02鍩虹璇硶錛堝畬鏁寸増錛?pdf
?????文件?????????233??2019-04-26?14:38??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._02鍩虹璇硶錛堝畬鏁寸増錛?pdf
?????文件??????778275??2019-04-26?14:38??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?浣滀笟鍙傝€?.pdf
?????文件??????205102??2019-04-26?14:37??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?緇冧範鍙傝€?pdf
?????文件?????????233??2019-04-26?14:37??__MACOSX\闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?._緇冧範鍙傝€?pdf
?????文件?????2595382??2019-04-26?14:38??闃塊噷浜戦┈鍝ython璧勬枡\閰嶅瀛︿範璧勬枡鍜岃浠?01-Python鍩虹鐜鎼緩鍜屽熀鏈娉?02鍩虹璇硶.pdf
............此處省略23個文件信息