# -*- coding: utf-8 -*-
"""created on sat jul 27 16:00:57 2019
@author: cc
"""#檔案操作
'''開啟當前目錄下檔案'''
#with會在不需要訪問檔案後將其關閉，避免使用close()關閉
#rstrip()函式用於刪除多餘的換行符
with
open
('digits.txt'
)as file_object:
contents=file_object.read(
)print
(contents.rstrip())
print
('\n'
)'''使用相對路徑訪問檔案'''
#.\表示上級目錄
with
open
('.\digits.txt'
)as file_object:
contents=file_object.read(
)print
(contents.rstrip())
print
('\n'
)'''使用絕對路徑讀取檔案'''
file_path=
'g:\python學習\digits.txt'
with
open
(file_path)
as file_object:
contents=file_object.read(
)print
(contents.rstrip())
print
('\n'
)'''逐行讀取'''
filename=
'digits.txt'
with
open
(filename)
as file_object:
for line in file_object:
print
(line.rstrip())
print
('\n'
)'''建立包含檔案內容的列表'''
#readlines()建立列表
#strip()刪除空格
filename=
'digits.txt'
digits=
with
open
(filename)
as file_object:
digits=file_object.readlines(
)pi_string=
''for line in digits:
#pi_string += line.rstrip()
pi_string += line.strip(
)print
(pi_string)
print
(float
(pi_string)
)print
(len
(pi_string)
)'''exercise'''
#全部讀取
filename=
'learning_python.txt'
with
open
(filename)
as file_object:
contents=file_object.read(
)print
(contents)
print
('\n'
)#按行讀取
with
open
(filename)
as file_object:
for line in file_object:
print
(line.rstrip())
print
('\n'
)#讀取成列表
with
open
(filename)
as file_object:
lines=file_object.readlines(
)'''拼接成一行字元'''
lines_string=
''for line in lines:
lines_string+=line.strip(
)print
(lines_string)
print
('\n'
)#replace()函式能夠臨時替換指定字元，但不會真正改變字串
print
(lines_string.replace(
'python'
,'c'))
print
('\n'
)print
(lines_string)
runfile('g:/python學習/file_operation.py', wdir='g:/python學習')
3.1414926535
8979323846
2643383279
3.1414926535
8979323846
2643383279
3.1414926535
8979323846
2643383279
3.1414926535
8979323846
2643383279
3.141492653589793238462643383279
3.1414926535897933
32in python you can learn many intresting things!
in python you can creative a magic world!
in python you can gain knowleges!
in python you can learn many intresting things!
in python you can creative a magic world!
in python you can gain knowleges!
in python you can learn many intresting things!in python you can creative a magic world!in python you can gain knowleges!
in c you can learn many intresting things!in c you can creative a magic world!in c you can gain knowleges!
in python you can learn many intresting things!in python you can creative a magic world!in python you can gain knowleges!
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