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Code Issues Projects Releases Wiki Activity

2020-10-19 21:08:55

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2020-10-19 21:08:55 +08:00
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@@ -4,7 +4,7 @@
In [1]:
```
```py
%%writefile test.txt
this is a test file.
hello world!
@@ -13,7 +13,7 @@ today is a good day.
```
```
```py
Writing test.txt
```
@@ -24,14 +24,14 @@ Writing test.txt
In [2]:
```
```py
f = open('test.txt')
```
In [3]:
```
```py
f = file('test.txt')
```
@@ -44,13 +44,13 @@ f = file('test.txt')
In [4]:
```
```py
text = f.read()
print text
```
```
```py
this is a test file.
hello world!
python is good!
@@ -62,14 +62,14 @@ today is a good day.
In [5]:
```
```py
f = open('test.txt')
lines = f.readlines()
print lines
```
```
```py
['this is a test file.\n', 'hello world!\n', 'python is good!\n', 'today is a good day.']
```
@@ -78,7 +78,7 @@ print lines
In [6]:
```
```py
f.close()
```
@@ -87,7 +87,7 @@ f.close()
In [7]:
```
```py
f = open('test.txt')
for line in f:
print line
@@ -95,7 +95,7 @@ f.close()
```
```
```py
this is a test file.
hello world!
@@ -110,7 +110,7 @@ today is a good day.
In [8]:
```
```py
import os
os.remove('test.txt')
@@ -122,7 +122,7 @@ os.remove('test.txt')
In [9]:
```
```py
f = open('myfile.txt', 'w')
f.write('hello world!')
f.close()
@@ -133,12 +133,12 @@ f.close()
In [10]:
```
```py
print open('myfile.txt').read()
```
```
```py
hello world!
```
@@ -147,7 +147,7 @@ hello world!
In [11]:
```
```py
f = open('myfile.txt', 'w')
f.write('another hello world!')
f.close()
@@ -155,7 +155,7 @@ print open('myfile.txt').read()
```
```
```py
another hello world!
```
@@ -164,7 +164,7 @@ another hello world!
In [12]:
```
```py
f = open('myfile.txt', 'a')
f.write('... and more')
f.close()
@@ -172,7 +172,7 @@ print open('myfile.txt').read()
```
```
```py
another hello world!... and more
```
@@ -183,7 +183,7 @@ another hello world!... and more
In [13]:
```
```py
f = open('myfile.txt', 'w+')
f.write('hello world!')
f.seek(6)
@@ -192,7 +192,7 @@ f.close()
```
```
```py
world!
```
@@ -201,7 +201,7 @@ world!
In [14]:
```
```py
import os
os.remove('myfile.txt')
@@ -213,7 +213,7 @@ os.remove('myfile.txt')
In [15]:
```
```py
import os
f = open('binary.bin', 'wb')
f.write(os.urandom(16))
@@ -225,14 +225,14 @@ f.close()
```
```
```py
'\x86H\x93\xe1\xd8\xef\xc0\xaa(\x17\xa9\xc9\xa51\xf1\x98'
```
In [16]:
```
```py
import os
os.remove('binary.bin')
@@ -258,7 +258,7 @@ os.remove('binary.bin')
In [17]:
```
```py
f = open('newfile.txt','w')
f.write('hello world')
g = open('newfile.txt', 'r')
@@ -266,7 +266,7 @@ print repr(g.read())
```
```
```py
''
```
@@ -277,7 +277,7 @@ print repr(g.read())
In [18]:
```
```py
f = open('newfile.txt','w')
for i in range(3000):
f.write('hello world: ' + str(i) + '\n')
@@ -289,7 +289,7 @@ g.close()
```
```
```py
hello world: 0
hello world: 1
hello world: 2
@@ -3088,7 +3088,7 @@ hello
In [19]:
```
```py
import os
os.remove('newfile.txt')
@@ -3098,7 +3098,7 @@ os.remove('newfile.txt')
In [20]:
```
```py
f = open('newfile.txt','w')
for i in range(3000):
x = 1.0 / (i - 1000)
@@ -3106,7 +3106,7 @@ for i in range(3000):
```
```
```py
---------------------------------------------------------------------------
ZeroDivisionError Traceback (most recent call last)
<ipython-input-20-8dc1cc9b29ec> in <module>()
@@ -3122,7 +3122,7 @@ ZeroDivisionError: float division by zero
In [21]:
```
```py
g = open('newfile.txt', 'r')
print g.read()
f.close()
@@ -3130,7 +3130,7 @@ g.close()
```
```
```py
hello world: 0
hello world: 1
hello world: 2
@@ -4109,7 +4109,7 @@ hell
In [22]:
```
```py
f = open('newfile.txt','w')
try:
for i in range(3000):
@@ -4122,21 +4122,21 @@ finally:
```
```
```py
something bad happened
```
In [23]:
```
```py
g = open('newfile.txt', 'r')
print g.read()
g.close()
```
```
```py
hello world: 0
hello world: 1
hello world: 2
@@ -5146,7 +5146,7 @@ hello world: 999
In [24]:
```
```py
with open('newfile.txt','w') as f:
for i in range(3000):
x = 1.0 / (i - 1000)
@@ -5154,7 +5154,7 @@ with open('newfile.txt','w') as f:
```
```
```py
---------------------------------------------------------------------------
ZeroDivisionError Traceback (most recent call last)
<ipython-input-24-9d2a70065b27> in <module>()
@@ -5170,14 +5170,14 @@ ZeroDivisionError: float division by zero
In [25]:
```
```py
g = open('newfile.txt', 'r')
print g.read()
g.close()
```
```
```py
hello world: 0
hello world: 1
hello world: 2
@@ -6185,7 +6185,7 @@ hello world: 999
In [26]:
```
```py
import os
os.remove('newfile.txt')