Python function Little Exercise

Practice the function of the classmate look over
#coding =utf-8
#3.1 7 Rows 7 columns Specifies the shape of the pattern
DefGraph (N):
    If n==1:
 Print‘ @\ n‘*7
 If n==2:
 Print‘@@@@@@@‘
 Print‘ @‘
 Print‘ @‘
 Print‘@@@@@@@‘
 Print‘@‘
 Print‘@‘
 Print‘@@@@@@@‘
Graph1)
Graph2)
# * Number equals the number of patterns
#3.21 string list, each element is an IP for the most frequently occurring IP
list=[' 10.199.88.161 ',' 10.199.88.162 ',' 10.199.88.163 ',' 10.199.88.163 ',' 10.199.88.163 ']
dict={}
Li=[]
For IIn list:
 If not Dict.has_key (i):
dict[i]=1
 Else
dict[i]+=1
For IIn Dict.keys ():
 If dict[i]==Max (Dict.values ()):
 PrintThe most frequently seen IP is: ', I
#has_key方法的调用和字典键值对的访问

#3.3 function Write Fibonacci the tangent sequence (rabbit formula)
DefFibonaqie (n):
 If n==0:
 Return0
 If n==1:
 Return1
 If n>1:
 Return Fibonaqie (n2) +fibonaqie (n1)
Print Fibonaqie (5)
#深刻理解fibonaqie (2) It's easy to go.

#3.4 Write a function that identifies whether the string conforms to the python syntax variable name
Import string
Defvar (v):
 If v[0]Not in String.letters:
 PrintU ' This string does not conform to the rule '
 ReturnFalse
 If v[-1]Not IN (string.letters+string.digits):
 PrintU ' This string does not conform to the rule '
 ReturnFalse
 For IIn v[1:-2]:
 If IIn (string.letters+string.digits+‘_‘):
 PrintU ' This string conforms to the rule '
 ReturnTrue
 Else
 PrintU ' This string does not conform to the rule '
 ReturnFalse
var' asda_123 ')
var' asda_123_ ')
var' 11 ')
var' *&^ ')

#3.9 write a string that computes the length of a string by traversing it
DefJlen (str):
x =0
 ForIIn STR:
x+=1
 PrintU ' the length of the string is: 'X
 return x
Jlen (' Xiegezifuchuan ')
#3.10 writes an indefinite number of strings stitching the first and last strings
DefSplicing (*args):
 Return args[0]+args[-1]
Print splicing (' 1 ',' 2 ',' 3 ')

#3.11 Define a function, enter an indefinite number of numbers, return all the numbers and
DefSumofdigits (*args):
x=0
 For IIn args:
X+=i
 return x
Print Sumofdigits (1,2,3,4,5)

#3.12 passing in multiple parameters, returning with List
DefReturnlist (*args):
Li=[]
 For IIn args:
Li.append (i)
 Return Li
Print Returnlist (1,2,3,4)

#3.13 any input month and day, calculate which day of the year this is
def Whichday (M, D):
if M in (1,3, 5,7): Return u ' This is this year ' +str ((m-1) *30+ (m-1)/2+d-2) +u ' Day ' if M in (2,4,6,8,10,12) : Return u ' This is this year's ' Str ((m-1) *30+m/2+d-2) +u ' if M in (9,11): Return u ' This is this year ' str ((m-1) *30+ (m+1)/2+d-2) +u ' Day ' print Whichday (3,25) #数学题-. -

Python function Little Exercise