Python条件if statemn

Question

我是python的初学者，在学习python的过程中，我在执行if语句时出错

有人能告诉我代码中遗漏了什么吗

File "Demo_class2_Conditions.py", line 8
print(X)
^
IndentationError: expected an indented block

X=int(input('Enter the value of X:'))
Y=int(input('Enter the value of Y:'))
Z=int(input('Enter the value of Z:'))
if X > Y:
        if X > Y:
        print(X)
        else:
        print(Y)
    else:
if Y > Z:
        if Y > Z:
        print(Y)
        else:
        print(Z)

Answer 1

在条件之后，应始终缩进属于块的语句（2或4个空格）

您的示例可以正确缩进，如下所示：

# first evaluation starts with no indentation
if X > Y: 
  print(X) # single statement (block 1) if previous condition satisfied
else:
  # block 2 begins
  print(Y)
  # block 2 ends

# second evaluation starts with no indentation
if Y > Z:
  print(Y) # block 3 has only 1 statement
else:
  print(Z) # single statement is block 4

# everything after evaluating is not indented