Python:raw_input and input usage

Input and raw_input can be used to read the console inputs, but input and raw_input are different when working with numbers
Pure Digital input

When the input is a pure number

Input returns a numeric type, such as Int,float
Raw_inpout return String type, String type

Input string is an expression

Input computes the numeric expression in the string, and Raw_input does not.

If you enter "57 + 3":

Input will get an integer 60
Raw_input will get the string "57 + 3"

Implementation of Python input

Look at the Python input document, you can see that input is actually implemented through raw_input, the principle is very simple, the following line of code:

def input (prompt):
Return (eval (raw_input (prompt)))

Python raw_input Read Input value

The following describes the use of Python raw_input,
The raw_input can be used to read data in a very convenient bundle console.
1. Input string

#13222319810101 * * *
NID = "
While 1:
NID = raw_input ("Input your id plz")
If Len (nID)! = Len ("13222319810101****"):
print ' wring length of id,input again '
Else
Break

print ' Your ID is%s '% (NID)

2. Enter an integer

nAge = Int (raw_input ("Input your Age plz:\n")
If NAge > 0 and NAge < 120:
print ' thanks! '
Else
print ' bad age '
print ' Your age is%d\n '% nAge

3. Enter floating-point type

Fweight = 0.0
Fweight = float (raw_input ("Input your weight\n"))
print ' Your weight is%f '% fweight

4. Enter 16 binary data

Nhex = Int (raw_input (' Input hex value (like 0x20): \ n '), 16)
print ' Nhex =%x,noct =%d\n '% (Nhex,nhex)

5. Enter 8 binary data

noct = Int (raw_input (' Input Oct value (like 020): \ n '), 8)
print ' noct =%o,ndec =%d\n '% (noct,noct)

Reprint: http://blog.csdn.net/kjing/article/details/7450146

Python:raw_input and input usage