while loop string formatting operator

while conditions:

Loop

while loop

change condition is not dead loop
variables 2 =
while 2> 0:
loop
variable - =. 1

break terminates the current cycle, and break the lower loop body code is not performed

out of this cycle continues for the next cycle (disguised as the last line of the loop body) in a loop when continue to continue in the case of



format
"" "
-------- -------- info
Name:
sex:
address:
telephone:
--------- --------- End
"" "

第一种
a="-------- info --------"
b="姓名："+name
c="性别："+age
d="地址："+addr
e="电话："+phone
f="--------- end ---------"
name = input("name")
age = input("age")
addr=input("addr")
phone=input("phone")
print(a+\n+b+...)

第二种
name = input("name")
age = input("age")
addr=input("addr")
phone=input("phone")
info="""
-------- info --------
姓名：%s
性别：%s
地址：%s
电话：%s
--------- end ---------
"""%(name,age,addr,phone)
print(info)

When must correspond footprint and filling

When filling the filling in order

% S - string representing location

% D |% i - accounting for digital position

%% - converted into ordinary Percent

name ="值"

j = "progress"

print (f "{name} learning progress is {j}%")

f automatically converted into conventional type of
print (f "{122}, {3300}")

Version in more than python3.6

Operators

1. Arithmetic operators

   + Plus

   -Less

   * Multiplication

   /except

   % Remainder

   ** a power of

   // (divisible (at the floor) divisible downwardly) 2 == 5 // 2

2. Comparison Operators

   Greater than> Less than <, = equal to, greater than or equal to> = Less than or equal <=, not equal! =

3. Assignment Operators

   + = A + = 1 plus the like either a = a + 1

   - = Less like a - = 1 a = a-1 both

4. Logical Operators

   and or not

   With or

   and operations, are true to be true, there is a fake is a fake

   and computing, it is really time to choose the content and behind

   and operations, choose the content and the front is false
   

1. Priority: ()> not> and> or

2. Member operator

   in the

   not in not in

   a="alex"

   if "b"in a:

   print ( "in")

   else :

   print ( "not")

   Coding acquaintance

   win - encoding GBK
   Linux - utf-8 encoded
   MAC - encoding utf-8

ascii code:
do not support the Chinese
one byte

gbk (GB):
English one-byte
Chinese 2 bytes

unicode (Unicode)
English 4 bytes
Chinese four bytes

utf-8
English one byte
Europe 2-byte
Asian 3 bytes

1 byte 8 == == 8bit 1bytes
1K == 1024B
1M == 1024K
. 1G 1024M ==
1T == 1024G