f.write fails to record inputs
up vote
-2
down vote
favorite
Suppose such a text
In [134]: !cat test1.md
The first test
I open it and write contents
In [156]: f1 = open("test1.md", "r+")
In [157]: f1.write("The second test")
Out[157]: 15
In [158]: !cat test1.md
The first test
test second method
It works correctly until now, if continue to input
In [159]: f1.write("The third test")
Out[159]: 14
In [160]: !cat test1.md
The first test
test second method
In [161]: f1.write("The fourth test")
Out[161]: 16
In [162]: !cat test1.md
The first test
test second method
What's the problem with f.write?.
python
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
asked Nov 11 at 6:11
avirate
647113
add a comment |
up vote
-2
down vote
favorite
Suppose such a text
In [134]: !cat test1.md
The first test
I open it and write contents
In [156]: f1 = open("test1.md", "r+")
In [157]: f1.write("The second test")
Out[157]: 15
In [158]: !cat test1.md
The first test
test second method
It works correctly until now, if continue to input
In [159]: f1.write("The third test")
Out[159]: 14
In [160]: !cat test1.md
The first test
test second method
In [161]: f1.write("The fourth test")
Out[161]: 16
In [162]: !cat test1.md
The first test
test second method
What's the problem with f.write?.
python
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
asked Nov 11 at 6:11
avirate
647113
1
try f.flush() ?
– Abhijith Shivaswamy
Nov 11 at 6:15
2
Where did "test second method" come from?
– user2357112
Nov 11 at 6:15
Tryf.close()?
– Mayank Porwal
Nov 11 at 6:16
1
Check out this, might help tutorialspoint.com/python/file_flush.htm
– Abhijith Shivaswamy
Nov 11 at 6:19
thanks for your kindness @AbhijithShivaswamy
– avirate
Nov 11 at 6:27
add a comment |
up vote
-2
down vote
favorite
up vote
-2
down vote
favorite
Suppose such a text
In [134]: !cat test1.md
The first test
I open it and write contents
In [156]: f1 = open("test1.md", "r+")
In [157]: f1.write("The second test")
Out[157]: 15
In [158]: !cat test1.md
The first test
test second method
It works correctly until now, if continue to input
In [159]: f1.write("The third test")
Out[159]: 14
In [160]: !cat test1.md
The first test
test second method
In [161]: f1.write("The fourth test")
Out[161]: 16
In [162]: !cat test1.md
The first test
test second method
What's the problem with f.write?.
python
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
asked Nov 11 at 6:11
avirate
647113
Suppose such a text
In [134]: !cat test1.md
The first test
I open it and write contents
In [156]: f1 = open("test1.md", "r+")
In [157]: f1.write("The second test")
Out[157]: 15
In [158]: !cat test1.md
The first test
test second method
It works correctly until now, if continue to input
In [159]: f1.write("The third test")
Out[159]: 14
In [160]: !cat test1.md
The first test
test second method
In [161]: f1.write("The fourth test")
Out[161]: 16
In [162]: !cat test1.md
The first test
test second method
What's the problem with f.write?.
python
python
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
asked Nov 11 at 6:11
avirate
647113
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
asked Nov 11 at 6:11
avirate
647113
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
edited Nov 11 at 9:56
Md. Mokammal Hossen Farnan
583320
583320
asked Nov 11 at 6:11
avirate
647113
asked Nov 11 at 6:11
avirate
647113
asked Nov 11 at 6:11
avirate
647113
647113
1
try f.flush() ?
– Abhijith Shivaswamy
Nov 11 at 6:15
2
Where did "test second method" come from?
– user2357112
Nov 11 at 6:15
Tryf.close()?
– Mayank Porwal
Nov 11 at 6:16
1
Check out this, might help tutorialspoint.com/python/file_flush.htm
– Abhijith Shivaswamy
Nov 11 at 6:19
thanks for your kindness @AbhijithShivaswamy
– avirate
Nov 11 at 6:27
add a comment |
1
try f.flush() ?
– Abhijith Shivaswamy
Nov 11 at 6:15
2
Where did "test second method" come from?
– user2357112
Nov 11 at 6:15
Tryf.close()?
– Mayank Porwal
Nov 11 at 6:16
1
Check out this, might help tutorialspoint.com/python/file_flush.htm
– Abhijith Shivaswamy
Nov 11 at 6:19
thanks for your kindness @AbhijithShivaswamy
– avirate
Nov 11 at 6:27
1
1
try f.flush() ?
– Abhijith Shivaswamy
Nov 11 at 6:15
try f.flush() ?
– Abhijith Shivaswamy
Nov 11 at 6:15
2
2
Where did "test second method" come from?
– user2357112
Nov 11 at 6:15
Where did "test second method" come from?
– user2357112
Nov 11 at 6:15
Try
f.close()?– Mayank Porwal
Nov 11 at 6:16
Try
f.close()?– Mayank Porwal
Nov 11 at 6:16
1
1
Check out this, might help tutorialspoint.com/python/file_flush.htm
– Abhijith Shivaswamy
Nov 11 at 6:19
Check out this, might help tutorialspoint.com/python/file_flush.htm
– Abhijith Shivaswamy
Nov 11 at 6:19
thanks for your kindness @AbhijithShivaswamy
– avirate
Nov 11 at 6:27
thanks for your kindness @AbhijithShivaswamy
– avirate
Nov 11 at 6:27
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
You need to flush() the buffer then close() the file. Also maybe append your strings to the file.
f1 = open("test1.md", "a") # "a" means append to file
f1.write("The second test")
f1.flush()
f1.close()
Thecat the file;
cat test1.md
The first test
test second method
The Correcct way.
You should really be doing it like this;
with open("test1.md", "a") as f1:
f1.write("The second test")
f1.flush()
f1.close()
answered Nov 11 at 9:48
Jack Herer
319111
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
You need to flush() the buffer then close() the file. Also maybe append your strings to the file.
f1 = open("test1.md", "a") # "a" means append to file
f1.write("The second test")
f1.flush()
f1.close()
Thecat the file;
cat test1.md
The first test
test second method
The Correcct way.
You should really be doing it like this;
with open("test1.md", "a") as f1:
f1.write("The second test")
f1.flush()
f1.close()
answered Nov 11 at 9:48
Jack Herer
319111
add a comment |
up vote
0
down vote
You need to flush() the buffer then close() the file. Also maybe append your strings to the file.
f1 = open("test1.md", "a") # "a" means append to file
f1.write("The second test")
f1.flush()
f1.close()
Thecat the file;
cat test1.md
The first test
test second method
The Correcct way.
You should really be doing it like this;
with open("test1.md", "a") as f1:
f1.write("The second test")
f1.flush()
f1.close()
answered Nov 11 at 9:48
Jack Herer
319111
add a comment |
up vote
0
down vote
up vote
0
down vote
You need to flush() the buffer then close() the file. Also maybe append your strings to the file.
f1 = open("test1.md", "a") # "a" means append to file
f1.write("The second test")
f1.flush()
f1.close()
Thecat the file;
cat test1.md
The first test
test second method
The Correcct way.
You should really be doing it like this;
with open("test1.md", "a") as f1:
f1.write("The second test")
f1.flush()
f1.close()
answered Nov 11 at 9:48
Jack Herer
319111
You need to flush() the buffer then close() the file. Also maybe append your strings to the file.
f1 = open("test1.md", "a") # "a" means append to file
f1.write("The second test")
f1.flush()
f1.close()
Thecat the file;
cat test1.md
The first test
test second method
The Correcct way.
You should really be doing it like this;
with open("test1.md", "a") as f1:
f1.write("The second test")
f1.flush()
f1.close()
answered Nov 11 at 9:48
Jack Herer
319111
answered Nov 11 at 9:48
Jack Herer
319111
answered Nov 11 at 9:48
Jack Herer
319111
answered Nov 11 at 9:48
Jack Herer
319111
319111
add a comment |
add a comment |
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1
try f.flush() ?
– Abhijith Shivaswamy
Nov 11 at 6:15
2
Where did "test second method" come from?
– user2357112
Nov 11 at 6:15
Try
f.close()?– Mayank Porwal
Nov 11 at 6:16
1
Check out this, might help tutorialspoint.com/python/file_flush.htm
– Abhijith Shivaswamy
Nov 11 at 6:19
thanks for your kindness @AbhijithShivaswamy
– avirate
Nov 11 at 6:27