Pearls3.2 python脚本

格式信函编程

1.格式信函模板

Welcome back, $1!
We hope that you and all the mambers
of the $0 family are constrantly
reminding your neighbors there
on $5 to shop with up.
As usual, we will ship your order to
    $3 $1 $2. $0
    $4 $5
    $6, $7 $8
  ...

Public'|'Jane'|'Q','Ms.'|600|'Maple Street'|'Your Town'|'Iowa'|12345

2.格式信函发生器

python

def formLetterSchema(fileName):
    field=['Public','Jane','Q','Ms.',600,'Maple Street','Your Town','Iowa',12345]
    file = open(fileName)
    for line in file:
        for index in range(len(field)):
            i = index
            s='$'+str(i)
            # field可能有数字
            line = line.replace(s,str(field[index]))
        print(line,end='')

if __name__=="__main__":
    formLetterSchema("1.txt")

做的练习：

#File:readline
def readLineByOpen(fileName):
    file = open(fileName)
    while 1:
        line = file.readline()
        if not line:
            break;
        print(line,end='')# 输出不换行
#File model fileinput
def readLineByModel_fileinput(fileName):
    import fileinput
    for line in fileinput.input(fileName):
       print(line,end='')# 输出不换行
#File read file by Cache
def readLineByCache(fileName):
    file = open(fileName)
    for line in file:
        print(line,end='')

#File read file by Cache
def readLineByCacheByChar(fileName):
    file = open(fileName)
    for line in file:
        for ch in line:
            if ch == '$':
                print('find a {$}',end='')

# range
def rangeTest(n):
    for i in range(1,n):
        print(i,end=' ')
# list
def listTest():
    list1=['chen','xinwei',1992,'03',13]
    for index in range(len(list1)):
        print(index,list1[index])
        
def formLetterSchema(fileName):
    field=['Public','Jane','Q','Ms.',600,'Maple Street','Your Town','Iowa',12345]
    file = open(fileName)
    for line in file:
        for index in range(len(field)):
            i = index
            s='$'+str(i)
            # field可能有数字
            line = line.replace(s,str(field[index]))
        print(line,end='')
            
def intToStr(n):
    s=str(n)
    print(s,end='')

if __name__=="__main__":
    #readLineByOpen("1.txt")
    #readLineByModel_fileinput("1.txt")
    #readLineByCache("1.txt")
    #rangeTest(100)
    #listTest()
    #readLineByCacheByChar("1.txt")
    #intToStr(199)
    formLetterSchema("1.txt")