-1
I created a file inside that file has the lista["hello"] I tried to add a new item to the list with the following code
import subprocess
et = open("/root/projeto/a.py").read()
exec(et)
lisga.append("kkkk")
print(lisga)
r = subprocess.getstatusoutput("cat /root/projeto/a.py")[1]
print(r)
When I open the file the value remains the same hello
0
I understood that you need to save the contents of a list to a file. If this is the case follow an example of a function salvar_lista that receives the parameters lista and arquivo.
To test simply call the function this way:
salvar_lista(lista, arquivo)
salvar_lista("teste", arquivo)
salvar_lista(8.99, arquivo)
salvar_lista(["R$",7.99], "outro_arquivo.txt")
The second function ler_arquivo(arquivo) prints the contents of the specified file.
Follow the complete code. To test save in a novo_arquivo.py
lista = ["Conteúdo da lista", 9876543210, "teste"]
arquivo = "arquivo.txt"
def salvar_lista(lista, arquivo):
arq = open(arquivo, 'a')
arq.writelines(str(lista) + '\n')
arq.close()
salvar_lista(lista, arquivo)
salvar_lista("teste", arquivo)
salvar_lista(8.99, arquivo)
salvar_lista(1234567890, arquivo)
salvar_lista(["R$",7.99], "outro_arquivo.txt")
def ler_arquivo(arquivo):
lista=[]
arq = open(arquivo, "r")
for linha in arq :
print(linha)
arq.close()
ler_arquivo(arquivo)
Output and content of arquivo.txt:
['Conteúdo da lista', 9876543210, 'teste']
teste
8.99
1234567890
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are missing some concepts of programming, files and magic for you understand there - let’s see if it appears someone who can explain to you.
– jsbueno
James, by what you asked the question you would be trying to directly change the source code of a Python file just to change a list? This makes no sense in at least 99.9% of situations and I find it difficult to fit into 0.1%. Could you detail, with text, what you need to do? Maybe what you’re trying to do is not the best option - we call this the XY problem if you want to research about.
– Woss