file find skips first letter

[Wanderer]

I'm using code

def getFiles(self, fileBase):
"""return a list of the filenames in a director containing a
base word
"""

allFiles = os.listdir(self.resultDir)
baseFiles = []
for f in allFiles:
if f.find(fileBase) > 0:
baseFiles.append(f)

return baseFiles

but the code can't find files with fileBase in it if the fileBase
starts the filename.

if the filenames are rnoise##.tif and fileBase is "rnoise" the file
won't be found. If fileBase is "noise" the files will be found.

 

[Mel]

I'm using code

def getFiles(self, fileBase):
"""return a list of the filenames in a director containing a
base word
"""

allFiles = os.listdir(self.resultDir)
baseFiles = []
for f in allFiles:
if f.find(fileBase) > 0:
baseFiles.append(f)

return baseFiles

but the code can't find files with fileBase in it if the fileBase
starts the filename.

if the filenames are rnoise##.tif and fileBase is "rnoise" the file
won't be found. If fileBase is "noise" the files will be found.

(untested) Try

if f.find(fileBase) > -1:


Mel.

 

[Alexander Kapps]

I'm using code

def getFiles(self, fileBase):
"""return a list of the filenames in a director containing a
base word
"""

allFiles = os.listdir(self.resultDir)
baseFiles = []
for f in allFiles:
if f.find(fileBase)> 0:
baseFiles.append(f)

return baseFiles

but the code can't find files with fileBase in it if the fileBase
starts the filename.

if the filenames are rnoise##.tif and fileBase is "rnoise" the file
won't be found. If fileBase is "noise" the files will be found.

str.find() returns the index to the left-most occurrence or -1 if
the substring is not found. So, if the file name starts with
fileBase, find() return 0 which you filter out with your test
f.find(fileBase)> 0.

Either use f.find(fileBase) >= 0 or better:

baseFiles = []
for f in allFiles:
if fileBase in f:
baseFiles.append(f)


HTH

 

[Tim Chase]

if f.find(fileBase)> 0:

..find() returns "-1" on failure, not 0. You want ">=" instead of
just ">", or even more readably

if fileBase in f:

-tkc

 

[MRAB]

I'm using code

def getFiles(self, fileBase):
"""return a list of the filenames in a director containing a
base word
"""

allFiles = os.listdir(self.resultDir)
baseFiles = []
for f in allFiles:
if f.find(fileBase)> 0:
baseFiles.append(f)

return baseFiles

but the code can't find files with fileBase in it if the fileBase
starts the filename.

if the filenames are rnoise##.tif and fileBase is "rnoise" the file
won't be found. If fileBase is "noise" the files will be found.

(untested) Try

if f.find(fileBase)> -1:

Python is a 0-based language, so if fileBase is at the start of f then
the result is 0. If fileBase isn't in f then the result is -1.

An alternative is:

if fileBase in f: