Path.resolve（）正在丢失Python中的相关信息

时间：2018-04-10 18:28:58

标签： python pathlib

使用Path（）的以下代码正在丢失相关信息：

    src_file=inspect.getfile(CompileTypeData)
    logger.debug(f'SRC_FILE: {src_file}')
    src_path = Path(src_file).resolve()
    logger.debug(f'SRC_PATH: {src_path}')
    logger.debug(f'SRC_DIRNAME: {src_path.parent}')

产生这个：

 DEBUG:from_project_types_file:SRC_FILE: ../../build_compile_mod/compile_type.py
 DEBUG:from_project_types_file:SRC_PATH: /build_compile_mod/compile_type.py
 DEBUG:from_project_types_file:SRC_DIRNAME: /build_compile_mod

我的相对路径怎么了？我的理解是resolve（）应该使它成为绝对路径，而不是丢失数据。

2 个答案:

答案 0 :(得分：0)

convert() { var doc = new jsPDF(); var col = ["Id", "TypeID","Accnt","Amnt","Start","End","Contrapartida"]; var rows = []; var imgData = 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var rowCountModNew = [ ["1721079361", "0001", "2100074911", "200", "22112017", "23112017", "51696"], ["1721079362", "0002", "2100074912", "300", "22112017", "23112017", "51691"], ["1721079363", "0003", "2100074913", "400", "22112017", "23112017", "51692"], ["1721079364", "0004", "2100074914", "500", "22112017", "23112017", "51693"] ] rowCountModNew.forEach(element => { rows.push(element); }); doc.text(80, 20, 'Report Final'); doc.addImage(imgData, 'JPEG', 90, 40, 20, 20); doc.autoTable(col, rows,{startY: 60}); doc.text(80, 130, 'Thank you'); doc.save('Test.pdf'); } 接受其他参数my_path.resolve()，默认为strict。如果设置为False，如果路径无法解析为绝对路径，则会引发True。这可用于评估pathlib是否有足够的数据来创建使用FileNotFoundError获得的字符串的绝对路径。

inspect.getfile()并不总是返回绝对路径，但您始终可以使用inspect.getfile()转换该路径，或将os.path.realpath(inspect.getfile(obj))方法与Path.relative_to(...)结合使用。

答案 1 :(得分：0)

相对路径示例和sys.path.insert

如果您使用相对路径到sys.path sys.path.insert并更改目录 运行脚本，然后你会得到错误的答案 试图使用__file__或从中派生的任何内容 它

说我们有这个：

 /tmp/test1
 /tmp/test2
 /tmp/test2/mymod.py
 /tmp/rundir/rundir2

所以我们CD到`/ tmp / test2 /并启动脚本。

% cd /tmp/test2

现在我们在Test2中创建这个脚本来定义 show_path()找到mymod.py的路径 并打印出来。

请注意sys.path.insert使用相对路径 这就是问题所在。

 import sys
 sys.path.insert(0,'../test1')
 from mymod import *
 import inspect  
 from pathlib import Path

 def show_path():
     myClassFile=inspect.getfile(MyClass)
     print(Path(myClassFile).resolve())

所以现在我们运行我们的脚本。它始于/tmp/test2/ 然后它更改目录并运行show_path()。

请注意，show_path()指向无处，因为 相对路径。

 import os
 os.chdir('/tmp/rundir/rundir2')
 show_path()

这会产生以下错误输出。

/private/tmp/rundir/test1/mymod.py
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