account_amount=0
def atm(num,deposit=True):
global account_amount
if deposit:
account_amount+=num
print(f"存款:+{num},账户余额{account_amount}")
else:
account_amount-=num
print(f"存款:-{num},账户余额{account_amount}")
atm(300)
atm(300)
atm(100,False)
def account_create(initial_amount=0):
def atm(num,deposit=True):
nonlocal initial_amount
if deposit:
initial_amount+=num
print(f"存款+{num},账户余额{initial_amount}")
else:
initial_amount-=num
print(f"存款-{num},账户余额{initial_amount}")
return atm
fn=account_create()
fn(100)
fn(200)
原理是是什么?就是把一个函数传递到两外一个函数里面去
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