Currently I am trying to open a text file called "temperature.txt" i have saved on my desktop using file handler, however for some reason i cannot get it to work. Could anyone tell me what im doing wrong.
#!/Python34/python
from math import *
fh = open('temperature.txt')
num_list = []
for num in fh:
num_list.append(int(num))
fh.close()
The pythonic way to do this is
#!/Python34/python
num_list = []
with open('temperature.text', 'r') as fh:
for line in fh:
num_list.append(int(line))
You don't need to use close here because the 'with' statement handles that automatically.
If you are comfortable with List comprehensions - this is another method :
#!/Python34/python
with open('temperature.text', 'r') as fh:
num_list = [int(line) for line in fh]
In both cases 'temperature.text' must be in your current directory.
You simply need to use .readlines() on fh
like this:
#!/Python34/python
from math import *
fh = open('temperature.txt')
num_list = []
read_lines = fh.readlines()
for line in read_lines:
num_list.append(int(line))
fh.close()
readlines will load the whole file into memory - but leaving it alone will only have one line in memory a time making it more efficient with bigger files.
FileNotFoundError-tempertature.txtshould be in the same directory as your.pyfile.ValueError- trying to convert a string ( read from file ) to int but it's not an int.Can't see output- print your list.