carson-file 0.0.0

create a temp file, memory file, rename, move, copy, kill the process, get attribute, create a directory, etc.

1 Install

• pip install carson-file

2 import packages

from Carson.Class.File import FileHelper, TempFile, MemoryFile

3 SOURCE DOCUMENT

FileHelper

class FileHelper

Class methods defined here:

delete_dir(dir_path)

recursive delete all files include directory.

file_path_add_prefix(file, pre_fix_name) -> str

>>> FileHelper.file_path_add_prefix("C:\Test\fileA.txt", "My")
'C:\Test\MyfileA.txt'

get_file_attrib(file)

get_file_info(file)

get_file_path(file)

to get filename which name is too long

get_file_properties(file) -> dict

Read all properties of the given file and return them as a dictionary.

EXAMPLE:

prop = FileHelper.get_file_properties(r"C:\Windows\System32\cmd.exe")
for key, value in prop['StringFileInfo'].items():
    print(f'{key:<15} {value if value else "":<30}')

OUTPUT:

Comments
InternalName    cmd
ProductName     Microsoft® Windows® Operating System
CompanyName     Microsoft Corporation
LegalCopyright  © Microsoft Corporation. All rights reserved.
ProductVersion  10.0.18362.356
FileDescription Windows 命令處理程式
LegalTrademarks
PrivateBuild
FileVersion     10.0.18362.356 (WinBuild.160101.0800)
OriginalFilename Cmd.Exe.MUI
SpecialBuild

if_dir_not_exist_then_create(chk_path, is_dir_name_have_dot=False) -> bool

return:

True: create successful, otherwise not.

is_illegal_file_name(file_path)

move_file(src_file, dst_file)

Warning

dst_file that will be replaced of src_file no matter dst_file exists or not.

name_normalized(file_path, is_need_rename=False, list_replace_mapping=((‘[’, ‘☶’), (‘]’, ‘☲’)), option: dict) -> tuple

if filename that contains illegal character then will replace those character by “list_replace_mapping” to rename the file.

USAGE:

name_normalized = FileHelper.name_normalized
new_path, be_normalized = name_normalized("C:\\[dir]\\sub_dir\\my_[test].txt")
('C:\\☶dir☲\\sub_dir\\my_☶test☲.txt', True)

name_normalized("C:\\[dir]\\sub_dir\\my_[test].txt", only_base_name=True)
('C:\\[dir]\\sub_dir\\my_☶test☲.txt', Ture)

name_normalized("my_[test].txt", only_base_name=True)
my_☶test☲.txt, True

name_normalized("my_[test].txt")
'my_☶test☲.txt', True

name_normalized("my_test.txt")
'my_test.txt', False

rename(src_file, dst_file, ignore_file_exist_error)

copy_config(org_config) -> configparser.ConfigParser

Note

you can assign the string to org_config, but its data must be able to read by ConfigParser

USAGE:

org_config = configparser.ConfigParser()
org_config.read([file1, file2], encoding='utf-8')
new_config = FileHelper.copy_config(org_config)

Static methods defined here:

kill_process(kill_name_list: List[str])

class MemoryFile

easier to write or read data from memory

USAGE:

import pandas as pd
tmp_file = MemoryFile()
tmp_file.write('name|age')
tmp_file.write('Carson|26')
tmp_file.writelines(['Person_1|18', 'Person_2|12'])
print(tmp_file.read())
tmp_file.io.seek(0)
print(tmp_file.readline())  # make sure cursor waiting position is what you want before readline
tmp_file.io.seek(0)
df = pd.read_csv(tmp_file.io, sep='|')  # must seek(0) before read_csv.
tmp_file.close()

with MemoryFile(MemoryFile.IoType.BYTE) as tmp_file_2:
    tmp_file_2.write('name|age')
    tmp_file_2.write('中文|26')
    tmp_file_2.writelines(['Person_1|18', 'Person_2|12'])
    print(tmp_file_2.read())
    tmp_file_2.seek(0)
    print(tmp_file_2.readline())
    tmp_file_2.seek(0)
    df = pd.read_csv(tmp_file_2.io, sep='|')

    with open('temp.temp', 'wb') as f:
        f.write(tmp_file_2.read())
    with open('temp.temp', 'r', encoding='utf-8') as f:
        print(f.read())

class TempFile

If you need temp file and that can be auto-deleted after you aren’t using it.

USAGE:

with TempFile('temp.temp') as tmp_f:
    tmp_f.close()  # it's only using for other programs will do something by it (Option)
    other_process(tmp_file_path)

more detail please see the source file.

all function and class have illustrate in source file