python初学者语法语句if elif

我正在学习python，并尝试进行一系列练习，但我被困在下一个练习中：

     inp_1 = input('your score between 0.0 and 1.0')

        try:   
score = float(inp_1)   
if 0.9 <= score <= 1.0:
              print ("A")    elif score >= 0.8:
              print ("B")    elif score >= 0.7:
              print ("C")    elif score >= 0.6:
              print ("D")    elif score <  0.6:
              print ("Your grade is an F")    
    else:       
print ('your score is more than 1.0')  
    except:   
 print ('invalid input, please try with a number')

缩进（=每行前面的制表符/空格数）在python中很重要。您发布的代码没有正确缩进。正确的缩进如下所示：

inp_1 = input('your score between 0.0 and 1.0')

try:   
    score = float(inp_1)   
    if 0.9 <= score <= 1.0:
        print ("A")    
    elif score >= 0.8:
        print ("B")
    elif score >= 0.7:
        print ("C")
    elif score >= 0.6:
        print ("D")    
    elif score <  0.6:
        print ("Your grade is an F")    
    else:       
        print ('your score is more than 1.0')  
except:   
    print ('invalid input, please try with a number')

inp_1 = input('your score between 0.0 and 1.0')
try:
    score = float(inp_1)
    if 0.9 <= score <= 1.0:
        print ("A")    
    elif score >= 0.8:
        print ("B")    
    elif score >= 0.7:
        print ("C")    
    elif score >= 0.6:
        print ("D")    
    elif score <  0.6:
        print ("Your grade is an F")
    else:
        print ('your score is more than 1.0')
except:
    print ('invalid input, please try with a number')

---

这是否回答了您的问题？

您的缩进应该是这样的：

inp_1 = input('your score between 0.0 and 1.0')

try:   
    score = float(inp_1)   
    if 0.9 <= score <= 1.0:
        print ("A")    
    elif score >= 0.8:
        print ("B")
    elif score >= 0.7:
        print ("C")
    elif score >= 0.6:
        print ("D")    
    elif score <  0.6:
        print ("Your grade is an F")    
    else:       
        print ('your score is more than 1.0')  
except:   
    print ('invalid input, please try with a number')

inp_1 = input('your score between 0.0 and 1.0')
try:
    score = float(inp_1)
    if 0.9 <= score <= 1.0:
        print ("A")    
    elif score >= 0.8:
        print ("B")    
    elif score >= 0.7:
        print ("C")    
    elif score >= 0.6:
        print ("D")    
    elif score <  0.6:
        print ("Your grade is an F")
    else:
        print ('your score is more than 1.0')
except:
    print ('invalid input, please try with a number')

inp_1=input（'你的分数在0.0到1.0之间'）
尝试：
分数=浮动（inp_1）
如果0.9=0.7：
打印（“C”）
elif得分>=0.6：
打印（“D”）
elif评分<0.6：
打印（“你的成绩是F”）
其他：
打印（'您的分数超过1.0'）
除：
打印（'输入无效，请用数字再试'）

我想你没有完全理解缩进。这不像其他任何语言。您需要正确地进行缩进

---

希望它能帮助您，新python用户对缩进感到困惑是正常的，请参阅以修复当前的脚本缩进。