Cat brother teach you to write reptile 018 - debug

History of bug

The first story only bug

The computer program of mother Grace Herbert (Grace Hopper).

Time back in 1947, when she was a monster programmed for the next drawing this ...

The first version of universal evolution of computer - Mark No. (Mark II) 2

bugOn the Incarnation synonymous with computer field program fault

As the saying goes, coding five minutes, debug two hours

This code will complain it?

a = input('请输入密码：')
if a == '123456'
    print('通过')
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There is a piece of code is wrong ...

for x in range(10)：
    &emsp;print（x）&emsp;&emsp;
for x in range(10):
    print(x)  
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Look at this section ...

n = 0
while n<3:
    username = input("请输入用户名：")
    password = input("请输入密码：")
    if username == 'abc' and password == '123':
        print("登录成功")
        break
    else:
        n=n+1
        print("输入有误")
else:
    print("你输错了三次，登录失败")
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Come together stubble ...

From the list of found Sunday

week = ['星期一','星期二','星期三','星期四','星期五','星期六','星期日']
sunday = week[7]
print(sunday)
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Create an empty list, is inserted inside the value ...

a = []
a = append ('A','B','C')
print(a)
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When you find that knowledge can not remember or can not be determined when necessary and timely review or search the Internet.

Do not force yourself to write code is not sure, this situation often prone to error.

Unclear thinking means that when we solve more complex problems, because we think clearly enough to the details and means of achieving,

Either step leading to wrong, wrong step; either, although there is no error, but the program does not achieve the results we want.

Before leaving the job ...

This code is the problem?

movie = {
    '妖猫传':['黄轩','染谷将太'],
    '无问西东':['章子怡','王力宏','祖峰'],
    '超时空同居':['雷佳音','佟丽娅']
}
name=input('你查询的演员是？')
for i in movie:
    actors=[i]
    if name in actors:
        print(name+'出演了'+i)
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Guess coins ...

import random
guess = ''
while guess not in ['正面','反面']:
    print('------猜硬币游戏------')
    print('猜一猜硬币是正面还是反面？')
    guess = input('请输入“正面”或“反面”：')
# 随机抛硬币，0代表正面，1代表反面
toss = random.randint(0,1)
if toss == guess:
    print('猜对了！你真棒')
else:
    print('没猜对，你还有一次机会。')
    guess = input('再输一次“正面”或“反面”：')
    if toss == guess:
        print('你终于猜对了！')
    else:
        print('大失败！')
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age = int(input('你今年几岁了？'))
if age < 18:
    print('不可以喝酒噢')
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If not a number ...

So the solution is ...

try:
    age = int(input('你今年几岁了？'))
    if age < 18:
        print('不可以喝酒噢')
except ValueError:
    print('你喝多了吧...')
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This code has no problem?

num = [1,2,0,3]
for x in num:
    print (6/x)
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So the solution is ....

num = [1,2,0,3]
for x in num:
    try:
        print (6/x)
    except ZeroDivisionError:
        print('0不能做除数')
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All abnormal summary ...

The exception name	description
BaseException	Base class for all exceptions
SystemExit	Interpreter exit request
KeyboardInterrupt	User Interrupt Executing (usually enter ^ C)
Exception	General Error base class
StopIteration	Iterator no more value
GeneratorExit	To notify the exit exception generator (generator) occurs
StandardError	All standard exceptions built base class
ArithmeticError	All numerical errors base class
FloatingPointError	Floating-point calculation error
OverflowError	Exceeds the maximum limit value calculation
ZeroDivisionError	In addition to (or modulus) of zero (all data types)
AssertionError	Assertion failure
AttributeError	Object does not have this property
EOFError	No built-in input, to reach the EOF marker
EnvironmentError	OS Error base class
IOError	Input / output operations to fail
OSError	Operating system error
WindowsError	System call fails
ImportError	Import module / object failed
LookupError	Invalid class data base query
IndexError	Without this sequence index (index)
KeyError	Without this key mapping
MemoryError	Memory overflow error (for Python interpreter is not fatal)
NameError	Undeclared / initialize objects (no attributes)
UnboundLocalError	Local access uninitialized variables
ReferenceError	Weak reference object (Weak reference) have been trying to access a garbage collection of
RuntimeError	General runtime error
NotImplementedError	The method has not been implemented
SyntaxError	Python syntax error
IndentationError	Indentation errors
TabError	Tab and space mix
SystemError	General interpreter system error
TypeError	Invalid type of operation
ValueError	Invalid parameter passed
UnicodeError	Unicode related errors
UnicodeDecodeError	Error when decoding of Unicode
UnicodeEncodeError	Unicode encoding error
UnicodeTranslateError	Unicode conversion error
Warning	Warning base class
DeprecationWarning	Warning about deprecated features
FutureWarning	Warning about the future structure of the semantics have changed
overflow Warning	The old warning about automatically promoted to a long integer (long) of
PendingDeprecationWarning	Will be warned about the characteristics of the waste
RuntimeWarning	Suspicious behavior (runtime behavior) run-time warning
SyntaxWarning	Suspicious Warning grammar
UserWarning	User code generated warning

Final exam is over, a small increase in the educational system found their score a few required courses,

He wanted to calculate their average score by python.

So wrote the following code, but not always results, please help correct the bug and run through the program.

scores = {'语文':89, '数学':95, '英语':80}
sum_score = 0
def get_average(scores):
    for subject, score in scores.items():
        sum_score += score
        print('现在的总分是%d'%sum_score)
    ave_score = sum_score/len(scores)
    print('平均分是%d'%ave_score)
get_average(scores)
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Xiaoqiang met a new friend named Cai, he wants you to give him a nickname, but he did not like to be called his dog and bark,

于是写了一个程序让自己避免叫他这两个外号中的一个，可是不知为什么叫他小狗程序也没有警告。

not_bad_word = True
while not_bad_word:
    x = input('请给旺财取个外号：')
    if x == '小狗' and x =='汪汪':
        not_bad_word = False
        print('我生气了，不想理你了！')
print('对不起，以后我不会这么叫你了')
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小明想用python写个程序，看看自己的存款每个月涨了多少倍。

可是发现程序报错，你能帮他找出错误，使程序重新运行吗？

deposit = [100,300,900,2000,5000,0,2000]
for i in range(1, len(deposit)):
    times = deposit[i]/deposit[i-1]
    print('你的存款涨了%f倍'%times)
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练习目标：

通过这个练习，我们会用代码做出一个贴心的除法计算器：

只要输入有误，就会给出相应的报错信息。

练习要求：

这个除法计算器需要包含的报错信息有：

输入了非数值（即不属于整数和浮点数）、除数为零以及变量不存在。

为了让代码可以给出相应的报错信息，我们可以运用课堂中谈到的try...except语句。

快速跳转:

转载于:https://juejin.im/post/5cfc4ad86fb9a07ebd48c902

Cat brother teach you to write reptile 018 - debug

History of bug

The first story only bug

The computer program of mother Grace Herbert (Grace Hopper).

Time back in 1947, when she was a monster programmed for the next drawing this ...

The first version of universal evolution of computer - Mark No. (Mark II) 2

bugOn the Incarnation synonymous with computer field program fault

As the saying goes, coding five minutes, debug two hours

This code will complain it?

There is a piece of code is wrong ...

Look at this section ...

Come together stubble ...

From the list of found Sunday

Create an empty list, is inserted inside the value ...

When you find that knowledge can not remember or can not be determined when necessary and timely review or search the Internet.

Do not force yourself to write code is not sure, this situation often prone to error.

Unclear thinking means that when we solve more complex problems, because we think clearly enough to the details and means of achieving,

Either step leading to wrong, wrong step; either, although there is no error, but the program does not achieve the results we want.

Before leaving the job ...

This code is the problem?

Guess coins ...

If not a number ...

So the solution is ...

This code has no problem?

So the solution is ....

All abnormal summary ...

Final exam is over, a small increase in the educational system found their score a few required courses,

He wanted to calculate their average score by python.

So wrote the following code, but not always results, please help correct the bug and run through the program.

Xiaoqiang met a new friend named Cai, he wants you to give him a nickname, but he did not like to be called his dog and bark,

于是写了一个程序让自己避免叫他这两个外号中的一个，可是不知为什么叫他小狗程序也没有警告。

小明想用python写个程序，看看自己的存款每个月涨了多少倍。

可是发现程序报错，你能帮他找出错误，使程序重新运行吗？

练习目标：

通过这个练习，我们会用代码做出一个贴心的除法计算器：

只要输入有误，就会给出相应的报错信息。

练习要求：

这个除法计算器需要包含的报错信息有：

输入了非数值（即不属于整数和浮点数）、除数为零以及变量不存在。

为了让代码可以给出相应的报错信息，我们可以运用课堂中谈到的try...except语句。

快速跳转:

Guess you like

`bug`On the Incarnation synonymous with computer field program fault

为了让代码可以给出相应的报错信息，我们可以运用课堂中谈到的`try...except`语句。