Lesson 1: Validate DNA and Count Nucleotides

# RNA Toolkit file
import collections

Nucleotides = ["A", "C", "G", "U"]


# Check the sequence to make sure it is a RNA String
def validateSeq(rna_seq):
    tmpseq = rna_seq.upper()
    for nuc in tmpseq:
        if nuc not in Nucleotides:
            return False
    return tmpseq


def countNucFrequency(seq):
    tmpFreqDict = {"A": 0, "C": 0, "G": 0, "U": 0}
    for nuc in seq:
        tmpFreqDict[nuc] += 1
    return tmpFreqDict
    # return dict(collections.Counter(seq))
# RNA Toolset/Code testing file
from RNAToolkit import *
import random

# Creating a random RNA sequence for testing:
randRNAStr = ''.join([random.choice(Nucleotides)
                      for nuc in range(50)])

DNAStr = validateSeq(randRNAStr)
print(countNucFrequency(RNAStr))

```python # RNA Toolkit file import collections Nucleotides = ["A", "C", "G", "U"] # Check the sequence to make sure it is a RNA String def validateSeq(rna_seq): tmpseq = rna_seq.upper() for nuc in tmpseq: if nuc not in Nucleotides: return False return tmpseq def countNucFrequency(seq): tmpFreqDict = {"A": 0, "C": 0, "G": 0, "U": 0} for nuc in seq: tmpFreqDict[nuc] += 1 return tmpFreqDict # return dict(collections.Counter(seq)) # RNA Toolset/Code testing file from RNAToolkit import * import random # Creating a random RNA sequence for testing: randRNAStr = ''.join([random.choice(Nucleotides) for nuc in range(50)]) DNAStr = validateSeq(randRNAStr) print(countNucFrequency(RNAStr)) ```