文章目錄
- 小游戲：找到最大的*Python*檔案
- 掃描標準庫目錄
- 掃描標準庫目錄樹
- 掃描模塊搜索路徑
- 掃描整臺機器
小游戲：找到最大的Python檔案
掃描標準庫目錄
示例：my_PP4E/system/filetools/bigpy_dir.py
#!/usr/bin/env python
"""
找出單個目錄下最大的Python原始碼檔案，
搜索Python源代碼庫，除非指定了dir命令列引數，
"""
import os
import glob
import sys
def bigpyDir(dir):
allpy = glob.glob(dir + os.sep + '*.py')
# print(allpy)
allsizes = []
for filename in allpy:
size = os.path.getsize(filename)
allsizes.append((size, filename))
allsizes.sort() # 默認升序排列
return allsizes # 檔案大小在檔案元組中率先出現，排列時以它為依據
def test():
if len(sys.argv) == 1:
dir = '/home/alone/anaconda3/lib/python3.7'
else:
dir = sys.argv[1]
sortedfile = bigpyDir(dir)
print(sortedfile[:3])
print(sortedfile[-3:])
if __name__ == '__main__':
test()
輸出：bigpy_dir.py
[(64, '/home/alone/anaconda3/lib/python3.7/__phello__.foo.py'), (129, '/home/alone/anaconda3/lib/python3.7/contextvars.py'), (257, '/home/alone/anaconda3/lib/python3.7/struct.py')]
[(117120, '/home/alone/anaconda3/lib/python3.7/inspect.py'), (143602, '/home/alone/anaconda3/lib/python3.7/turtle.py'), (228535, '/home/alone/anaconda3/lib/python3.7/_pydecimal.py')]
掃描標準庫目錄樹
示例：bigpy_tree.py
#!/usr/bin/env python
"""
掃描整個目錄樹中最大的Python源代碼檔案，
搜索Python源代碼庫，利用pprint漂亮地顯示結果，
"""
import os
import pprint
import sys
TRACE = False
def getLibPath():
if sys.platform[:3] == 'win':
return 'C:\\Python\\Lib'
else:
return '/home/alone/anaconda3/lib' # 需手動修改
def getFileList(rootdir):
pyfiles = []
for curdir, subdir, curfile in os.walk(rootdir):
if TRACE:
print(curdir)
for eachfile in curfile:
if eachfile.endswith('.py'):
if TRACE:
print(eachfile)
path = os.path.join(curdir, eachfile)
size = os.path.getsize(path)
pyfiles.append((size, path))
return pyfiles
def bigpyTree(rootdir):
pyfiles = getFileList(rootdir)
pyfiles.sort()
return pyfiles
def test():
libpath = getLibPath()
allfiles = bigpyTree(libpath)
pprint.pprint(allfiles[:3])
pprint.pprint(allfiles[-3:])
if __name__ == '__main__':
test()
輸出：bigpy_tree.py（linux）
[(0, '/home/alone/anaconda3/lib/python3.7/email/mime/__init__.py'),
(0,
'/home/alone/anaconda3/lib/python3.7/lib2to3/tests/data/fixers/myfixes/__init__.py'),
(0, '/home/alone/anaconda3/lib/python3.7/pydoc_data/__init__.py')]
[(857010,
'/home/alone/anaconda3/lib/python3.7/site-packages/astropy/_erfa/core.py'),
(886617,
'/home/alone/anaconda3/lib/python3.7/site-packages/sympy/integrals/rubi/rules/trinomial_products.py'),
(1121413,
'/home/alone/anaconda3/lib/python3.7/site-packages/sympy/integrals/rubi/rules/sine.py')]
掃描模塊搜索路徑
示例：bigpy_path.py
#!/usr/bin/env python
"""
找出模塊匯入搜索路徑下最大的Python原始碼檔案，
跳過已經訪問過的目錄，統一路徑和大小寫的格式以便使之正確匹配，
并在pprint列印結果中添加檔案行數，
"""
import sys
import os
import pprint
def isWin():
if sys.platform[:3] == 'win':
return True
else:
False
def normpath(path):
path = os.path.normpath(path)
if isWin():
return path, os.path.normcase(path)
return path, None
def getPySizeList(curdir, filenames, trace=0):
allsizes = []
for eachfile in filenames:
if eachfile.endswith('.py'):
if trace > 1:
print('\t' + eachfile)
eachfile = os.path.join(curdir, eachfile)
try:
size = os.path.getsize(eachfile)
except os.error:
print('skipping', eachfile, sys.exc_info()[0])
else:
numlines = len(list(open(eachfile, 'rb')))
allsizes.append((size, numlines, eachfile))
return allsizes
def getAllSizes(trace=0):
visited = []
allsizes = []
for libdir in sys.path:
for curdir, subdir, files in os.walk(libdir):
if trace > 0:
print(curdir)
curdir, dircase = normpath(curdir)
if not isWin():
dircase = curdir
if dircase in visited:
continue
else:
visited.append(dircase)
allsizes.extend(getPySizeList(curdir, files, trace=trace))
return allsizes
def showResult(allsizes):
print('By size...')
allsizes.sort()
pprint.pprint(allsizes[:3])
pprint.pprint(allsizes[-3:])
print('By lines...')
allsizes.sort(key=lambda x: x[1])
pprint.pprint(allsizes[:3])
pprint.pprint(allsizes[-3:])
def bigpyPath(trace=0, show=True): # trace：1代表目錄，2代表加上檔案
allsizes = getAllSizes(trace=trace)
if show:
showResult(allsizes)
if __name__ == '__main__':
bigpyPath()
輸出：bigpy_path.py（Linux）
By size...
[(0, 0, '/home/alone/anaconda3/lib/python3.7/email/mime/__init__.py'),
(0,
0,
'/home/alone/anaconda3/lib/python3.7/lib2to3/tests/data/fixers/myfixes/__init__.py'),
(0, 0, '/home/alone/anaconda3/lib/python3.7/pydoc_data/__init__.py')]
[(857010,
22630,
'/home/alone/anaconda3/lib/python3.7/site-packages/astropy/_erfa/core.py'),
(886617,
4071,
'/home/alone/anaconda3/lib/python3.7/site-packages/sympy/integrals/rubi/rules/trinomial_products.py'),
(1121413,
5171,
'/home/alone/anaconda3/lib/python3.7/site-packages/sympy/integrals/rubi/rules/sine.py')]
By lines...
[(0, 0, '/home/alone/anaconda3/lib/python3.7/email/mime/__init__.py'),
(0,
0,
'/home/alone/anaconda3/lib/python3.7/lib2to3/tests/data/fixers/myfixes/__init__.py'),
(0, 0, '/home/alone/anaconda3/lib/python3.7/pydoc_data/__init__.py')]
[(660933, 13441, '/home/alone/anaconda3/lib/python3.7/pydoc_data/topics.py'),
(538989,
13497,
'/home/alone/anaconda3/lib/python3.7/site-packages/Cython/Compiler/ExprNodes.py'),
(857010,
22630,
'/home/alone/anaconda3/lib/python3.7/site-packages/astropy/_erfa/core.py')]
掃描整臺機器
示例：bigext_tree.py
#!/usr/bin/env python
"""
找到任意目錄樹里所有給定型別的檔案里最大的那個，
避免重復路徑，捕獲錯誤，添加追蹤和行數大小，
同樣使用集合、檔案迭代器和生成器以避免裝在整個檔案，
并試圖繞過不可解碼的目錄/檔案名稱的列印，
"""
import os
import pprint
import sys
def tryprint(text):
try:
print(text)
except UnicodeEncodeError:
print(text.encode)
def getFromCommand():
returnVar = [os.curdir, '.py', 1]
if len(sys.argv) > 1:
returnVar[0] = sys.argv[1]
if len(sys.argv) > 2:
returnVar[1] = sys.argv[2]
if len(sys.argv) > 3:
returnVar[2] = int(sys.argv[3])
return returnVar
def getFileList(curdir, files, extname, allsizes, trace):
for file in files:
if file.endswith(extname):
if trace > 1:
tryprint('\t' + file)
fullpath = os.path.join(curdir, file)
try:
size = os.path.getsize(fullpath)
numlines = sum(+1 for line in open(fullpath, 'rb'))
except Exception:
print('error', sys.exc_info[0])
else:
allsizes.append((size, numlines, fullpath))
def getAllSizes(dirname, extname, trace):
visited = set()
allsizes = []
for curdir, subdir, files in os.walk(dirname):
if trace:
tryprint(curdir)
curdir = os.path.normpath(curdir)
if sys.platform[:3] == 'win':
fixname = os.path.normcase(curdir)
else:
fixname = curdir
if fixname in visited:
if trace:
tryprint('skipping ' + curdir)
else:
visited.add(curdir)
getFileList(curdir, files, extname, allsizes, trace)
allsizes.sort()
return allsizes
def showResult(allsizes):
for title, key in (('bytes', 0), ('lines', 1)):
print('\nBy {}...'.format(title))
allsizes.sort(key=lambda x: x[key])
pprint.pprint(allsizes[:3])
pprint.pprint(allsizes[-3:])
def bigextTree(
command=True, show=True, dirname=os.curdir, extname='.py', trace=1
):
if command:
[dirname, extname, trace] = getFromCommand()
allsizes = getAllSizes(dirname, extname, trace)
if show:
showResult(allsizes)
if __name__ == '__main__':
bigextTree()
輸出：bigext_tree.py
python-programming---markdown-notes$ ./my_PP4E/system/filetools/bigext_tree.py . .py 0
By bytes...
[(0, 0, 'PP4E/Examples/PP4E/System/Media/__init__.py'),
(7, 1, 'PP4E/Examples/PP4E/Dstruct/Basic/__init__.py'),
(12, 3, 'PP4E/Examples/PP4E/Ai/ExpertSystem/__init__.py')]
[(52953, 1089, 'PP4E/Examples/PP4E/Gui/TextEditor/textEditor.py'),
(52953,
1089,
'PP4E/changes/detailed-diffs/1.2/patched-files-12/textEditor.py'),
(52953,
1089,
'PP4E/changes/detailed-diffs/1.3/patched-files-13/prior '
'-release/patched-files-12/textEditor.py')]
By lines...
[(0, 0, 'PP4E/Examples/PP4E/System/Media/__init__.py'),
(7, 1, 'PP4E/Examples/PP4E/Dstruct/Basic/__init__.py'),
(17, 1, 'PP4E/Examples/PP4E/Dstruct/Classics/__init__.py')]
[(52953, 1089, 'PP4E/Examples/PP4E/Gui/TextEditor/textEditor.py'),
(52953,
1089,
'PP4E/changes/detailed-diffs/1.2/patched-files-12/textEditor.py'),
(52953,
1089,
'PP4E/changes/detailed-diffs/1.3/patched-files-13/prior '
'-release/patched-files-12/textEditor.py')]
python-programming---markdown-notes$ ./my_PP4E/system/filetools/bigext_tree.py ./my_PP4E/system/ .py 1
./my_PP4E/system/
./my_PP4E/system/filetools
./my_PP4E/system/__pycache__
By bytes...
[(28, 1, 'my_PP4E/system/hello_out.py'),
(29, 4, 'my_PP4E/system/test_argv.py'),
(53, 2, 'my_PP4E/system/test_tty.py')]
[(2069, 82, 'my_PP4E/system/filetools/bigpy_path.py'),
(2421, 94, 'my_PP4E/system/filetools/bigext_tree.py'),
(2835, 93, 'my_PP4E/system/multi_3.py')]
By lines...
[(28, 1, 'my_PP4E/system/hello_out.py'),
(53, 2, 'my_PP4E/system/test_tty.py'),
(54, 2, 'my_PP4E/system/writer.py')]
[(2069, 82, 'my_PP4E/system/filetools/bigpy_path.py'),
(2835, 93, 'my_PP4E/system/multi_3.py'),
(2421, 94, 'my_PP4E/system/filetools/bigext_tree.py')]
python-programming---markdown-notes$ ./my_PP4E/system/filetools/bigext_tree.py . .txt 0
By bytes...
[(4, 2, 'PP4E/Examples/PP4E/System/Streams/input.txt'),
(5, 2, 'my_PP4E/system/input.txt'),
(6, 1, 'PP4E/Examples/PP4E/Gui/ShellGui/eggs.txt')]
[(360381,
4693,
'PP4E/Examples/PP4E/Internet/Email/PyMailGui/media/i18n-filenames-tests/Mail-saved-after-sent--OpenMeInGUI.txt'),
(360381,
4693,
'PP4E/changes/detailed-diffs/1.3/patched-files-13/i18n-filenames-tests/Mail-saved-after-sent--OpenMeInGUI.txt'),
(3316452,
43205,
'PP4E/Examples/PP4E/Internet/Email/PyMailGui/SavedMail/savemany-3E.txt')]
By lines...
[(6, 1, 'PP4E/Examples/PP4E/Gui/ShellGui/eggs.txt'),
(6, 1, 'PP4E/Examples/PP4E/Gui/ShellGui/new-eggs.txt'),
(6, 1, 'PP4E/Examples/PP4E/Gui/ShellGui/temp/eggs.txt')]
[(360381,
4693,
'PP4E/Examples/PP4E/Internet/Email/PyMailGui/media/i18n-filenames-tests/Mail-saved-after-sent--OpenMeInGUI.txt'),
(360381,
4693,
'PP4E/changes/detailed-diffs/1.3/patched-files-13/i18n-filenames-tests/Mail-saved-after-sent--OpenMeInGUI.txt'),
(3316452,
43205,
'PP4E/Examples/PP4E/Internet/Email/PyMailGui/SavedMail/savemany-3E.txt')]
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