Basic programming questions --python
1. Let Python help you choose a drink at random!
import random
listC = ["Jiaduobao", "Sprite", "Cola", "Brave into the world", "Coconut juice"]
print((listC), type((listC))) # choicesfunctionReturn list type data
print((listC), type((listC))) # choice function returns string class
12345
2. ListA stores the ordered menu, let Python help you add a "braised pork" and remove a "boiled dried shredded pork".
listA = ["Boiled dried shredded", "tofu", "baby shrimp", "green vegetables", "scrambled eggs with tomatoes"]
("Braised Pork")
print(listA)
("Boiled dried shredded silk")
print(listA)
12345
3. The price of your two-person afternoon meal (including 2 coffee and 2 snacks) is stored in dictMenu, so that Python can help calculate and output the total consumption.
dictMenu = {"cappuccino": 32, "Mocha": 30, "Matcha Cake": 28, "Brownie": 26}
Sum = 0
for i in ():
Sum += i
print(Sum)
12345
4. Obtain the input positive integer N, invert the output the positive integer, without consideringabnormalCondition
s = input()
print(eval(s[::-1])) # The eval function will convert the content in the input string s to the corresponding type
12
5. Given a number 123456, please print the output with a width of 25 and right alignment, and fill it with the plus sign "+".
print("{:+>25}".format(123456))
1
6. Given a number 12345678.9, please add a thousand-digit separator, set the width to 30, print the output with right alignment, and fill it with spaces.
print("{:>30,}".format(12345678.9))
1
7. Given an integer number 0x1010, please use this to output it in Pythonhexadecimal, decimal, octal and binary representations, separated by English commas
print("0x{0:x},0o{0:o},{0},0b{0:b}".format(0x1010))
1
8. Obtain a string entered by the user, please output its all lowercase form.
s = input()
print(())
12
9. Obtain a string input by the user and output the number of occurrences of character a.
s = input()
print(("a"))
12
10. Get a string input by the user, replace the string "py" that appears in it as 'python", and output the replaced string.
s = input()
print(("py", "Python"))
12
11. Obtain a set of numbers entered by the user, separated by commas, and output the maximum value.
data = input()
a = data.split(",") # a is the list type
b = []
for i in a:
(i)
print(max(b))
123456
12. s="9e10' is a floating point string, that is, a string containing a decimal point or represented by scientific notation. Write a program to determine whether s is a floating point string. If so, output True, otherwise output False. (2 methods)
s = "9e10"
if type(eval(s) == type(0.0)):
print("True")
else:
print("False")
12345
s = "9e10"
print("True" if type(eval(s)) == type(0.0) else "False")
12
13. s="123' is an integer-form string. Write a program to determine whether s is an integer-form string. If so, output True, otherwise output Fasle. The code is required to not exceed 2 lines.
s = "123"
print("True" if type(eval(s)) == type(1) else "False")
12
14. ls is a list with the content as follows: ls = [123,"456',789,"123',456,"798'], find the sum of its integer elements.
ls = [123, "456", 789, "123", 456, "798"]
Sum = 0
for item in ls:
if type(item) == type(123):
Sum += item
print(Sum)
123456
15. While True: It can form a "violent cycle". Please write a program to use this dead loop to complete the following functions: loop to obtain user input until the user enters the character y or Y, and exit the program. (Two examples are given)
while True:
s = input()
if s in ["y", "Y"]:
break
1234
while True:
s = input()
if s== "y" or s== "Y":
exit()
1234
16. Please write a program to obtain user input without prompts. After obtaining user input, calculate 100 divided input value. The result will be output if the calculation is normal and exit, and never report an error and exit.
try:
a = eval(input())
print(100 / a, type(100 / a)) # float
except:
pass
12345
17. The following function returns the sum of squares of two numbers, please add the code at the horizontal line
def psum(a, b):
return a ** 2 + b ** 2
if __name__ == "__main__":
t1 = psum(2, 2)
print(t1)
123456
18. The following function returns the sum of squares of two numbers. If only one variable is given, the default value of the other variable is integer 10.
def psum(a, b=10):
return (a ** 2 + b ** 2), a + b
if __name__ == "__main__":
t1, t2 = psum(2)
print(t1, t2)
12345
19. The following function returns the sum of squares of two numbers and the sum of two numbers at the same time. Please add the code at the horizontal line.
def psum(a, b):
return (a ** 2 + b ** 2), a + b
if __name__ == "__main__":
t1, t2 = psum(2, 2)
print(t1, t2)
12345
20. The following function returns the product of the sum of squares of two numbers and n
n = 2
def psum(a, b):
global n
return (a ** 2 + b ** 2) * n
if __name__ == "__main__":
print(psum(2, 3))
123456
21. The PyIntaller library is used to package Python source programs. Given a source file, give the command to package it into an executable file:
pyinstaller -F
22. The PyInstaller library is used to package Python source programs. Given a source file and an icon file, use these two files to package and generate an executable file:
pyinstaller -I -F
23. txt represents a piece of Chinese text. Please add the code to output all possible word segmentation results of the text.
import jieba
txt = "Examination Center of the Ministry of Education of the People's *"
ls = (txt, cut_all=True)
print(ls)
12345
["China', "People', "People', "Education', "Ministry of Education of the People', "Chinese," "People', "People', "Republic," "Republic," "National Education," "Education," "Ministry of Education," "Examination Center," "Examination," "Center']
24. Open a file. If the file does not exist, create it. If it exists, an exception will be generated and an alarm will be called.
try:
f = open("", "x")
except:
print("The file exists, please read it carefully!")
1234
25. ls is a list with the following content: ls = [123,"456',789,"123',456,"789'], add an element "012" after 789
ls = [123, "456", 789, "123", 456, "789"]
(3, "012")
print(ls)
123
[123, "456’, 789, "012’, "123’, 456, "789’]
26. ls is a list with the content as follows: ls = [123,"456',789,"123',456,"789'], use the remove() method, and use a one-line statement to delete element 789.
ls = [123, "456", 789, "123", 456, "789"]
(789)
print(ls)
123
27. ls is a list with the content as follows: ls = [123,"456',789,"123',456,"789'], please print the list ls in reverse order.
ls = [123, "456", 789, "123", 456, "789"]
print(ls[::-1])
12
["789’, 456, "123’, 789, "456’, 123]
28. ls is a list with the content as follows: ls = [123,"456',789,"123',456,"789'], print out the serial number at the first time in the list ls. Note that do not output the serial number directly, use the list operation method.
ls = [123, "456", 789, "123", 456, "789"]
print((789))
12
29. d is a dictionary with the content as follows: d = {123:"123', 456:"456',789:"789'}, please add the following code to output all values in dictionary d in a list form.
d = {123: "123", 456: "456", 789: "789"}
print(list(()))
12
30. d is a dictionary with the following content: d = {123:"123', 456:"456',789:"789'}, output all keys in dictionary d in a list form.
d = {123: "123", 456: "456", 789: "789"}
print(list(()))
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