Parsing error in : input: '{ds}.bam'.format(ds=ds) for ds in DATASETS

[iromeo]

works in 8.20.6

# kate: syntax python;

DATASETS = '1 2 3'.split()

rule mapmature_all:
	input: '{ds}.bam'.format(ds=ds) for ds in DATASETS

rule gzip:
	output: '{file}.gz'
	input: '{file}'
	shell: 'gzip < {input} > {output}'

rule cutadapt:
	output: fastq=temp('{ds}.fastq')
	input: '{ds}.txt'
	shell:
		'echo hello > {output.fastq}'

rule bwa_mature:
	output: bam='{ds}.bam'
	input: reads='{ds}.fastq.gz'
	threads: 4
	shell:
		'echo starting with {threads} threads; sleep 10; touch {output.bam}'

[iromeo]

Note: no parsing errors for:

rule mapmature_all:
	input: ('{ds}.bam'.format(ds=ds) for ds in DATASETS)