UnboundLocalError: local variable 'varab' referenced before assignment

Question

Hej, kod:

global varab

varab = 0
vars = []


for i in range(0, 10):
    vars.append(['',''])

#vars.v.append(['var1', 9])

#print(vars.v)

def error(num, error_type):
    print(f'\033[91mGit Error #{num} >> {error_type} \033[0m')

def compiler(t):
    if t:
        compileLine = t
    compileLines = compileLine.split()

    #print(compileLines)

    cl = compileLines[0]
    if cl:
        if cl == 'calc':
            #print('Calculating')
            calce=''
            for i in range(0, len(compileLines)-1):
                calce+=compileLines[i+1]
            
            print(eval(calce))
        elif cl == 'definedvars':
            print('Defined vars: ')
            vararray = vars
            for i in vararray:
                print(f'{i[0]} with value ${i[1]}') 
        elif cl == 'print':
            calce=''
            if len(compileLines)==2:
                print(compileLines[1])
            else:
                manyBrackets = 0
                for j in range(0,len(compileLines)):
                    if compileLines[j] == "'":
                        manyBrackets += 1
                if manyBrackets == 2 or manyBrackets == 0:
                    if compileLines[1] == "'":
                        for i in range(0, len(compileLines)-2):
                            if compileLines[i+2] != "'":
                                calce += compileLines[i+2]
                                calce += " "
                            else:
                                print(calce)
                else:
                    error(1, 'Function print can\'t have more than 0 or 2 "\'" ')
        elif cl == 'gi':
            if(compileLines[1].split('.')[1]=='gi'):
                file = compileLines[1]
                f = open(file, "r")
                content = f.readlines()

                for k in content:
                    if k == '':
                        print('')
                    else:
                        compiler(k)
            else:
                error('4', f'File with {compileLines[1].split(".")[1]} extension can\'t be readed')
        elif cl == 'var':
            print(vars)
            if len(compileLines) < 3:
                for k in vars:
                    if k[0] == str(compileLines[1]):
                        error('2', f'Variable named {str(compileLines[1])} exist!')
                        break
                    else:
                        vars[varab] = [str(compileLines[1]), None]
                        varab += 1
                        print(vars)   
                        break
            else:
                if str(compileLines[2]) == '=':
                    calce = ''
                    manyD = 0
                    for i in range(0, len(compileLines)-3):
                        if str(i+3) == "'":
                            manyD += 1
                            continue
                        else:
                            calce += str(compileLines[i+3])
                    if manyD == 0 or manyD == 2:
                        for k in vars:
                            if k[0] == compileLines[1]:
                                error('2', f'Variable named {str(compileLines[1])} exist!')
                                break
                            else:
                                vars[varab] = [str(compileLines[1]), calce]
                                varab += 1
                    else:
                        error('2', 'In Variable, you must use 0 or 2 "\'"')      
                 

    else:
        print("null")



while True:
    
    compiler(input("Git => "))

jest problem bo jak odpalam i pisze np:

var a to wyskakuje:

[['', ''], ['', ''], ['', ''], ['', ''], ['', ''], ['', ''], ['', ''], ['', ''], ['', ''], ['', '']]
Traceback (most recent call last):
  File "shell.py", line 111, in <module>
    compiler(input("Git => "))
  File "shell.py", line 78, in compiler
    vars[varab] = [str(compileLines[1]), None]
UnboundLocalError: local variable 'varab' referenced before assignment
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! git@1.0.1 start: `py shell.py`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the git@1.0.1 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

co jest nie tak

Answer 1

Deklaracja `global varab` powinna być w funkcji, a nie na zewnątrz.

Inna sprawa że lepiej taki kod przeprojektować, żeby takich mutowalnych zmiennych globalnych nie było.