January 2018
Intermediate to advanced
856 pages
17h 17m
Chinese
Content preview from Python 技術手冊 第三版
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第 16 章 測試、除錯和最佳化
print_callees,
print_callers
s.print_callees(*restrictions)
輸出
s
的側寫資料中的函式串列，依據對
s.sort_stats
的最近呼叫排
序過，並且受限於給定的限制（restrictions），如果有的話。你能以
零或多個
restrictions
呼叫每個列印方法，它們會依序一個接著一個
被套用，以減少輸出的行數。如果限制是一個
int
n
，就將輸出限於
前
n
行。若限制是介於
0.0
與
1.0
的一個
float
f
，那麼輸出就會限於
f
百分比的文字行。如果限制是一個字串，它就會被編譯為一個正規
表達式模式（涵蓋於前面的「正規表達式和 re 模組」中），只有能夠
滿足在此正規表達式上呼叫的
search
方法的文字行會被輸出。限制是
累加性的，舉例來說，
s.print_callees(10,0.5)
會輸出前五行（10 的
一半）。限制只會在摘要和標頭行之後套用：摘要與標頭會無條件輸
出。
輸出的每個函式
f
都會伴隨
f
的 callers（呼叫
f
的函式）或
f
的
callees（
f
呼叫的函式）所成的串列，取決於所用的方法名稱。
print_stats s.print_stats(*restrictions)
輸出有關
s
側寫資料的統計資訊，依據對
s.sort_stats
的最近呼叫排
序過，並且受限於給定的限制（restrictions），如果有的話，如前面
print_callees, print_callers
中所涵蓋的。在幾個摘要行（收集側寫 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.