# 2022.6.21 Python review course

Gold 250 2022-06-23 16:45:11 阅读数:616

2022.6.21pythonreviewcourse

## Several functions mentioned

1. strip
Remove the specified character or character sequence at the beginning and end of the string

2. type
The data type of the output variable

3. count
Statistics specify the starting point or the ending point , The number of occurrences of a character or substring

4. insert
Inserts the specified object into the list at the specified location

5. sep
Custom delimiter , Commonly used in print Function

## Programming questions

``````score = []
avg = []
for i in range(0, 4):
score.append([0] * 3)
for i in range(0, 4):
for j in range(0, 3):
score[i][j] = int(input())
avg[i] += score[i][j]
for i in range(0, 4):
print(avg[i])
``````
1. Judge leap year or normal year
``````year = int(input("Please input a year"))
if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
print(year,' It's a leap year ')
else:
print(year,' It's the year of the year ')
``````
1. Write a function , Exchange the values of two variables
``````def swap(a, b):
t = a
a = b
b = t
print(a, b)
``````
1. Print number of daffodils
``````for x in range(1, 10):
for y in range(0, 10):
for z in range(0, 10):
s1 = x * 100 + y * 10 + z
s2 = x**3 + y**3 + z**3
if s1 == s2:
print(s1)
``````
1. Create a text file , And write string , Then save it
``````file = open('C:/a.txt','w+')
a = "123456"
file.write(a)
file.close()
``````