Indentationerror: Unexpected Unindent Why?
#! /Usr/Bin/Python Import Sys Class Seq: Def __Init__(Self, Id, Adnseq, Colen): Self. Id = Id Self. Dna = Adnseq Self. Cdnlen = Colen Self. Prot = "" Def...
IndentationError: unexpected unindent WHY???
#!/usr/bin/python
import sys
class Seq:
def __init__(self, id, adnseq, colen):
self.id = id
self.dna = adnseq
self.cdnlen = colen
self.prot = ""
def __str__(self):
return ">%s\n%s\n" % (self.id, self.prot)
def translate(self, transtable):
self.prot = ""
for i in range(0,len(self.dna),self.cdnlen):
codon = self.dna[i:i+self.cdnlen]
aa = transtable[codon]
self.prot += aa
def parseCommandOptions(cmdargs):
tfname = cmdargs[1]
sfname = cmdargs[2]
return (tfname, sfname)
def readTTable(fname):
try:
ttable = {}
cdnlen = -1
tfile = open(fname, "r")
for line in tfile:
linearr = line.split()
codon = linearr[0]
cdnlen = len(codon)
aa = linearr[1]
ttable[codon] = aa
tfile.close()
return (ttable, cdnlen)
def translateSData(sfname, cdnlen, ttable):
try:
sequences = []
seqf = open(seq_fname, "r")
line = seqf.readline()
while line:
if line[0] == ">":
id = line[1:len(line)].strip()
seq = ""
line = seqf.readline()
while line and line[0] != '>':
seq += line.strip()
line = seqf.readline()
sequence = Seq(id, seq, cdnlen)
sequence.translate(ttable)
sequences.append(sequence)
seqf.close()
return sequences
if __name__ == "__main__":
(trans_table_fname, seq_fname) = parseCommandOptions(sys.argv)
(transtable, colen) = readTTable(trans_table_fname)
seqs = translateSData(seq_fname, colen, transtable)
for s in seqs:
print s
It says:
def translateSeqData(sfname, cdnlen, ttable):
^
IndentationError: unexpected unindent
WHY? I have checked a thousands times and I can't find the problem. I have only used Tabs and no spaces. Plus, sometimes it asks to define the class. Is that Ok?
4 Answers
It's because you have:
def readTTable(fname):
try:
without a matching except block after the try: block. Every try must have at least one matching except.
See the Errors and Exceptions section of the Python tutorial.
you didn't complete your try statement. You need and except in there too.
This error could actually be in the code preceding where the error is reported. See the For example, if you have a syntax error as below, you'll get the indentation error. The syntax error is actually next to the "except" because it should contain a ":" right after it.
try:
#do something
except
print 'error/exception'
def printError(e):
print e
If you change "except" above to "except:", the error will go away.
Good luck.
@MaxPython The answer below is missing syntax ":"
try:
#do something
except:
# print 'error/exception'
def printError(e):
print e
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