本人是java後端開發人員,這幾天在自學python,踩過一些坑,希望給大家一些幫助.

Python是有格式要求的!!!Python是有格式要求的!!!Python是有格式要求的!!!

縮排要合理,自己再寫一個python輸出檔案的時候發現的,我把程式碼提供出來

dbfilename = 'people-file'
ENDDB='enddb.'
ENDREC='endrec.'
RECSEP='=>'

def  storeDbase(db):

    dbfile = open(dbfilename,'w')
    for key in db:
            dbfile.write (key)
            for
 
(name,value) in db[key].items():
                dbfile.write(name + RECSEP + repr(value) + '\n')
            dbfile.write (ENDREC)
            dbfile.write(ENDDB)
    dbfile.close()
    
def loadDbase(dbfilename = dbfilename):
    dbfile = open(dbfilename)
    import sys
    sys.stdin = dbfile
    db = {}
    key = input()
    while
 
 key != ENDDB:
        rec = {}
        filed = input()
        while filed != ENDREC:
            name,value = filed.split(RECSEP)
            rec[name] = eval(value)
            filed = input()
        db[key] =rec
        key = input()
        return db

if __name__ == '__main__':
    from initdata import
 
 db
    storeDbase(db)
    

這個是initdata.py

bob = {'name':'bob','age':20,'pay':1000}
sus = {'name':'sus','age':30,'pay':2000}
dac = {'name':'dac','age':50,'pay':3000}
sfc = {'name':'sfc','age':40,'pay':4000}

db = {}
db['bob'] = bob
db['sus'] = sus
db['dac'] = dac
db['sfc'] = sfc

當時我寫這個這段程式碼的時候,寫成了這樣子

dbfilename = 'people-file'
ENDDB='enddb.'
ENDREC='endrec.'
RECSEP='=>'

def  storeDbase(db):

    dbfile = open(dbfilename,'w')
    for key in db:
            dbfile.write (key)
            for(name,value) in db[key].items():
                dbfile.write(name + RECSEP + repr(value) + '\n')
            dbfile.write (ENDREC)
            dbfile.write(ENDDB)
    dbfile.close()
    
def loadDbase(dbfilename = dbfilename):
    dbfile = open(dbfilename)
    import sys
    sys.stdin = dbfile
    db = {}
    key = input()
    while key != ENDDB:
        rec = {}
        filed = input()
        while filed != ENDREC:
            name,value = filed.split(RECSEP)
            rec[name] = eval(value)
            filed = input()
        db[key] =rec
        key = input()
        return db

            if __name__ == '__main__':
                from initdata import db
                storeDbase(db)

細心的人已經發現了, 下面這段話的格式縮排有問題,但是在java裡面只是格式不好看,並不影響編譯執行,而在python裡卻影響,他會不執行的,因為Python是有嚴禁的邏輯關係的:
Python第二章——行與縮排

  if __name__ == '__main__':
                from initdata import db
                storeDbase(db)

就是這樣,(>ω<)喵!!!