How to use the avialable command "S.xx", such as S.count
Closed this issue · 2 comments
xiaoxstz commented
Put the code (copied from official document here) below to file hello.py
import fire
def hello(name):
return 'Hello {name}!'.format(name=name)
if __name__ == '__main__':
fire.Fire(hello)I want to explore the commands provided by fire. I use the command to check help python Hello.py Bob --help
Then, I see the help like below
NAME
fire1.py abc - "abcabc"
SYNOPSIS
fire1.py abc COMMAND
DESCRIPTION
The string "abcabc"
COMMANDS
COMMAND is one of the following:
capitalize
Return a capitalized version of the string.
casefold
Return a version of the string suitable for caseless comparisons.
center
Return a centered string of length width.
count
S.count(sub[, start[, end]]) -> int
encode
Encode the string using the codec registered for encoding.
endswith
S.endswith(suffix[, start[, end]]) -> bool
expandtabs
Return a copy where all tab characters are expanded using spaces.
find
S.find(sub[, start[, end]]) -> int
format
S.format(*args, **kwargs) -> str
...
... I know the usage of some commands, such as capitalize, casefold,center.
python Hello.py Bob # output: Hello Bob!
python Hello.py Bob casefold # output: hello bob!
python Hello.py Bob capitalize # output: Hello bob!
# center is harder, but --help will tell you the usage
python Hello.py Bob center --help
python Hello.py Bob center 20 "=" # output: =====Hello Bob!=====However, the other commands whose help says S.xxx seems not work, for example, count, endswith, find, and format
python Hello.py Bob count # throw error
python Hello.py Bob count --help # throw errorxiaoxstz commented
I don't know why count throws the errors
python Hello.py Bob count throw errors below:
Traceback (most recent call last):
File "D:\Desktop\Hello.py", line 8, in <module>
fire.Fire(hello)
File "C:\Users\tanzi\scoop\apps\mambaforge\current\Lib\site-packages\fire\core.py", line 143, in Fire
component_trace = _Fire(component, args, parsed_flag_args, context, name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\tanzi\scoop\apps\mambaforge\current\Lib\site-packages\fire\core.py", line 477, in _Fire
component, remaining_args = _CallAndUpdateTrace(
^^^^^^^^^^^^^^^^^^^^
File "C:\Users\tanzi\scoop\apps\mambaforge\current\Lib\site-packages\fire\core.py", line 693, in _CallAndUpdateTrace
component = fn(*varargs, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^
TypeError: count() takes at least 1 argument (0 given)According to the message, I tried the command below. It works.
python Hello.py Bob # output: Hello Bob!
python Hello.py Bob count "o" # output: 2
python Hello.py Bob count "h" # output: 0
python Hello.py Bob count "H" # output: 1
python Hello.py Bob count "Hello" # output: 1The usage is clear now. count is used to find str in the output string.
However, checking its help throws errors: python Hello.py Bob count "Hello" --help
Traceback (most recent call last):
File "D:\Desktop\Hello.py", line 8, in <module>
fire.Fire(hello)
File "C:\Users\tanzi\scoop\apps\mambaforge\current\Lib\site-packages\fire\core.py", line 143, in Fire
component_trace = _Fire(component, args, parsed_flag_args, context, name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\tanzi\scoop\apps\mambaforge\current\Lib\site-packages\fire\core.py", line 477, in _Fire
component, remaining_args = _CallAndUpdateTrace(
^^^^^^^^^^^^^^^^^^^^
File "C:\Users\tanzi\scoop\apps\mambaforge\current\Lib\site-packages\fire\core.py", line 693, in _CallAndUpdateTrace
component = fn(*varargs, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^
TypeError: count() takes no keyword argumentsxiaoxstz commented
The solution is clear now.
python Hello.py Bob count "Hello" # Output: 1
python Hello.py Bob endswith "b" # Output: False
python Hello.py Bob endswith "!" # Output: True
python Hello.py Bob find "B" # Output: 6
python Hello.py Bob index "B" # Output: 6
python Hello.py Bob find "Bob" # Output: 6
python Hello.py Bob index "Bob" # Output: 6