First week of Python learning, first week of python

First week of Python learning, first week of python

• I. My first program

 

print("Hello word!")

 

Therefore, python is a very concise language. Unlike c, c ++, and so on, you have to call a bunch of libraries to write a simple program. In addition, python 3 supports Chinese compiling.

 

 

• Ii. Use of Variables

Python is a dynamic, strong language

name="fromzore"print(name)

 

You do not need to define the type of the variable. The system automatically defines the variable according to the input.

Name = "fromzore" age = input ("age"); pt2 = "% s your age is % s" % (name, age) print (pt2)

In input, the str type is input by default. To use % d, force conversion is required.

Name = "fromzore" age = int (input ("age") pt2 = "% s your age is % d" % (name, age) print (pt2)

No error is reported.

• 3. Loop

The loop is divided into a while loop and a for loop. The difference between the loop and c is that python can be followed by else statements.

age=18sum=0while sum<3:   count= int(input("age"))   sum+=1   if sum==count:       print("you are right")       break   elif age<count:       print("It is biger than age")   elif age>count:       print("It is smaller than age")else:    print("Multiple input errors")

The result is as follows:

For Loop

for i in range(3):   count= int(input("age"))   sum+=1   if sum==count:       print("you are right")       break   elif age<count:       print("It is biger than age")   elif age>count:       print("It is smaller than age")else:    print("Multiple input errors")

Changing while to for results is the same.

Ps: there is an error in the first blog posting or where it is not well written. Please give me more advice.