He aratohu me pehea te hanga me te whakamahi i nga taurangi i te Python.
Ko nga taurangi te ingoa o nga waahi ka whakamahia hei penapena korero ki te taonga i penapenahia hei whakamahara.
Ka hangaia he taurangi i roto i te Python, me whai whakaaro nga ture e whai ake nei:
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Ka whakamahia e maatau te kaituku mahi =
hei toha i te uara ki te taurangi.
Tauira he tika, he he hoki nga ingoa taurangi me nga taumahi:
#Legal variable names: name = 'John' error_404 = 404 _status_200 = 'OK' mySurname = 'Doe' SURNAME = 'Doe' surname2 = 'Doe' #Illegal variable names: 200_OK = 200 error-500 = 'Server Error' my var = 'John' $myname = 'John'
Panui:i roto i te Python, kaore koe e hiahia ki te whakaatu i nga momo taurangi i mua o te waa. Ka kitea aunoa e te Kaiwhakamamaori te momo taurangi ma nga raraunga kei roto.I te Python, ka taea e taatau te toha i nga uara ki nga taurangi maha i te raina kotahi:
Tauira:
ok, redirect, server_error = 200, 300, 500 print(ok) print(redirect) print(server_error)
Putanga:
200 300 500
Ka taea hoki e taatau te whakarite i te uara ano ki nga taurangi maha:
err_500 = err_501 = err_502 = 'server_error' print(err_500) print(err_501) print(err_502)
Ko nga taera e tautuhia ana i waho o tetahi mahi e mohiotia ana ko nga rereketanga o te ao.
Ka taea te whakamahi i nga taurangi o te ao i roto, i waho atu hoki o nga mahi.
status_ok = 200 def status_code():
print('Status code is ', status_ok) status_code()
Mena ka hangaia e koe he taurangi me te ingoa kotahi i roto i tetahi mahinga, na ka huri te rohe i te mahi. Ko te taurangi o te ao ka pupuri i tona uara pera i te waa i kiia ai.
Tauira:
status = 200 def status_code():
status = 401
print('Status code is ', status) status_code() print('Status code is ', status)
Putanga:
Status code is 401 // first print statement Status code is 200 // second print statement
Mena ka hiahia koe ki te whakarereke i te uara o te ao taurangi i roto i tetahi mahi, me whakamahi te global
kupu matua
Hei tauira:
status = 200 def status_code():
global status
status = 401
print('Status code is ', status) status_code() print('Status code is ', status)
Putanga
Status code is 401 // first print statement Status code is 401 // second print statement